231132211331210 has 32 divisors (see below), whose sum is σ = 481985292367872. Its totient is φ = 78159777137280.

The previous prime is 231132211331179. The next prime is 231132211331261. The reversal of 231132211331210 is 12133112231132.

It is a super-2 number, since 2×231132211331210² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231132211331210.

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, 22615671146 + ... + 22615681365.

It is an arithmetic number, because the mean of its divisors is an integer number (15062040386496).

Almost surely, 2^{231132211331210} is an apocalyptic number.

231132211331210 is an abundant number, since it is smaller than the sum of its proper divisors (250853081036662).

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

231132211331210 is a wasteful number, since it uses less digits than its factorization.

231132211331210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45231352598.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 231132211331210 its reverse (12133112231132), we get a palindrome (243265323562342).

The spelling of 231132211331210 in words is "two hundred thirty-one trillion, one hundred thirty-two billion, two hundred eleven million, three hundred thirty-one thousand, two hundred ten".