231611068513257 has 16 divisors (see below), whose sum is σ = 312724488960000. Its totient is φ = 152452522080144.

The previous prime is 231611068513229. The next prime is 231611068513283. The reversal of 231611068513257 is 752315860116132.

It is not a de Polignac number, because 231611068513257 - 2¹⁰ = 231611068512233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231611068513217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156679494 + ... + 158150832.

It is an arithmetic number, because the mean of its divisors is an integer number (19545280560000).

Almost surely, 2^{231611068513257} is an apocalyptic number.

It is an amenable number.

231611068513257 is a deficient number, since it is larger than the sum of its proper divisors (81113420446743).

231611068513257 is a wasteful number, since it uses less digits than its factorization.

231611068513257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135620.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 231611068513257 in words is "two hundred thirty-one trillion, six hundred eleven billion, sixty-eight million, five hundred thirteen thousand, two hundred fifty-seven".