231344291 has 2 divisors, whose sum is σ = 231344292. Its totient is φ = 231344290.

The previous prime is 231344261. The next prime is 231344317. The reversal of 231344291 is 192443132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231344291 - 2¹⁰ = 231343267 is a prime.

It is not a weakly prime, because it can be changed into another prime (231344221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115672145 + 115672146.

It is an arithmetic number, because the mean of its divisors is an integer number (115672146).

Almost surely, 2^231344291 is an apocalyptic number.

231344291 is a deficient number, since it is larger than the sum of its proper divisors (1).

231344291 is an equidigital number, since it uses as much as digits as its factorization.

231344291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 231344291 is about 15210.0062787627. The cubic root of 231344291 is about 613.8839264291.

The spelling of 231344291 in words is "two hundred thirty-one million, three hundred forty-four thousand, two hundred ninety-one".