231310221232 has 20 divisors (see below), whose sum is σ = 452783799496. Its totient is φ = 114462789120.

The previous prime is 231310221143. The next prime is 231310221257. The reversal of 231310221232 is 232122013132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74518494 + ... + 74521597.

Almost surely, 2^231310221232 is an apocalyptic number.

It is an amenable number.

231310221232 is a deficient number, since it is larger than the sum of its proper divisors (221473578264).

231310221232 is a wasteful number, since it uses less digits than its factorization.

231310221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149040196 (or 149040190 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231310221232 its reverse (232122013132), we get a palindrome (463432234364).

The spelling of 231310221232 in words is "two hundred thirty-one billion, three hundred ten million, two hundred twenty-one thousand, two hundred thirty-two".