231390646313 has 8 divisors (see below), whose sum is σ = 248358052008. Its totient is φ = 214796150784.

The previous prime is 231390646301. The next prime is 231390646339. The reversal of 231390646313 is 313646093132.

It can be written as a sum of positive squares in 4 ways, for example, as 75860583184 + 155530063129 = 275428^2 + 394373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231390646313 - 2⁴ = 231390646297 is a prime.

It is a super-2 number, since 2×231390646313² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231390646343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93226256 + ... + 93228737.

It is an arithmetic number, because the mean of its divisors is an integer number (31044756501).

Almost surely, 2^231390646313 is an apocalyptic number.

It is an amenable number.

231390646313 is a deficient number, since it is larger than the sum of its proper divisors (16967405695).

231390646313 is a wasteful number, since it uses less digits than its factorization.

231390646313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186455083.

The product of its (nonzero) digits is 209952, while the sum is 41.

The spelling of 231390646313 in words is "two hundred thirty-one billion, three hundred ninety million, six hundred forty-six thousand, three hundred thirteen".