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# The Number **231** : Properties and Meanings

Prime Factors of **231**=3x7x11.

**231**is a Triangular Number.

**231**is a Hexagonal Number.

**231**is an Octahedral Number.

**231**is a 17-gonal Number.

**231**is a 78-gonal Number.

**231**is a Centered 23-gonal Number.

**231**is the 22nd number which is the Product of 3 distinct primes.

**231**is the triangle of 21 which is the triangle of 6 which is the triangle of 3 which is the triangle of 2. Thus,

**231**, is a triangle of a triangle of a triangle.

16 can be Partitioned in

**231**ways.

**231**=7x33

The

**231**two-letter combinations of the 22 letters of the Hebrew Alphabet referred to as the

**231**gates of Sefer Yetzirah.

**Two hundred thirty-one**is the exact number of cubic inches in a U.S. liquid gallon.

### The Year 231 AD

In the year**231**AD Origen, disciple of Ammonius Saccas, founder of Neoplatonism , was exiled in Caesarea.

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