231562313 has 2 divisors, whose sum is σ = 231562314. Its totient is φ = 231562312.

The previous prime is 231562307. The next prime is 231562327. The reversal of 231562313 is 313265132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155052304 + 76510009 = 12452^2 + 8747^2 .

It is a cyclic number.

It is not a de Polignac number, because 231562313 - 2⁴ = 231562297 is a prime.

It is a super-2 number, since 2×231562313² = 107242209603819938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231562333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115781156 + 115781157.

It is an arithmetic number, because the mean of its divisors is an integer number (115781157).

Almost surely, 2^231562313 is an apocalyptic number.

It is an amenable number.

231562313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231562313 is an equidigital number, since it uses as much as digits as its factorization.

231562313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

The square root of 231562313 is about 15217.1716491600. The cubic root of 231562313 is about 614.0767100627.

The spelling of 231562313 in words is "two hundred thirty-one million, five hundred sixty-two thousand, three hundred thirteen".