13231202857 has 2 divisors, whose sum is σ = 13231202858. Its totient is φ = 13231202856.

The previous prime is 13231202839. The next prime is 13231202879. The reversal of 13231202857 is 75820213231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10627754281 + 2603448576 = 103091^2 + 51024^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231202857 - 2¹¹ = 13231200809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13231202837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615601428 + 6615601429.

It is an arithmetic number, because the mean of its divisors is an integer number (6615601429).

Almost surely, 2^13231202857 is an apocalyptic number.

It is an amenable number.

13231202857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231202857 is an equidigital number, since it uses as much as digits as its factorization.

13231202857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 13231202857 in words is "thirteen billion, two hundred thirty-one million, two hundred two thousand, eight hundred fifty-seven".