231624313 has 2 divisors, whose sum is σ = 231624314. Its totient is φ = 231624312.

The previous prime is 231624311. The next prime is 231624347. The reversal of 231624313 is 313426132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174953529 + 56670784 = 13227^2 + 7528^2 .

It is a cyclic number.

It is not a de Polignac number, because 231624313 - 2¹ = 231624311 is a prime.

Together with 231624311, it forms a pair of twin primes.

It is equal to p_12727033 and since 231624313 and 12727033 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (231624311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115812156 + 115812157.

It is an arithmetic number, because the mean of its divisors is an integer number (115812157).

Almost surely, 2^231624313 is an apocalyptic number.

It is an amenable number.

231624313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231624313 is an equidigital number, since it uses as much as digits as its factorization.

231624313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

The square root of 231624313 is about 15219.2086850795. The cubic root of 231624313 is about 614.1315108031.

The spelling of 231624313 in words is "two hundred thirty-one million, six hundred twenty-four thousand, three hundred thirteen".