231049716613 has 2 divisors, whose sum is σ = 231049716614. Its totient is φ = 231049716612.

The previous prime is 231049716593. The next prime is 231049716637. The reversal of 231049716613 is 316617940132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225452133124 + 5597583489 = 474818^2 + 74817^2 .

It is a cyclic number.

It is not a de Polignac number, because 231049716613 - 2²¹ = 231047619461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231049716613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231049716643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115524858306 + 115524858307.

It is an arithmetic number, because the mean of its divisors is an integer number (115524858307).

Almost surely, 2^231049716613 is an apocalyptic number.

It is an amenable number.

231049716613 is a deficient number, since it is larger than the sum of its proper divisors (1).

231049716613 is an equidigital number, since it uses as much as digits as its factorization.

231049716613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 231049716613 in words is "two hundred thirty-one billion, forty-nine million, seven hundred sixteen thousand, six hundred thirteen".