231311331130 has 64 divisors (see below), whose sum is σ = 482801980032. Its totient is φ = 78857175040.

The previous prime is 231311331059. The next prime is 231311331143. The reversal of 231311331130 is 31133113132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239937 + ... + 721243.

It is an arithmetic number, because the mean of its divisors is an integer number (7543780938).

Almost surely, 2^231311331130 is an apocalyptic number.

231311331130 is an abundant number, since it is smaller than the sum of its proper divisors (251490648902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231311331130 is a wasteful number, since it uses less digits than its factorization.

231311331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481599.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 231311331130 its reverse (31133113132), we get a palindrome (262444444262).

The spelling of 231311331130 in words is "two hundred thirty-one billion, three hundred eleven million, three hundred thirty-one thousand, one hundred thirty".