231211660264402 has 32 divisors (see below), whose sum is σ = 386548977098880. Its totient is φ = 103078037963520.

The previous prime is 231211660264379. The next prime is 231211660264427. The reversal of 231211660264402 is 204462066112132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81021208 + ... + 83826364.

It is an arithmetic number, because the mean of its divisors is an integer number (12079655534340).

Almost surely, 2^{231211660264402} is an apocalyptic number.

231211660264402 is a deficient number, since it is larger than the sum of its proper divisors (155337316834478).

231211660264402 is a wasteful number, since it uses less digits than its factorization.

231211660264402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932786.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 231211660264402 in words is "two hundred thirty-one trillion, two hundred eleven billion, six hundred sixty million, two hundred sixty-four thousand, four hundred two".