231132211330 has 32 divisors (see below), whose sum is σ = 418758352560. Its totient is φ = 91848556800.

The previous prime is 231132211291. The next prime is 231132211357. The reversal of 231132211330 is 33112231132.

It can be written as a sum of positive squares in 8 ways, for example, as 109500766281 + 121631445049 = 330909^2 + 348757^2 .

It is a super-2 number, since 2×231132211330² (a number of 24 digits) contains 22 as substring.

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, 15537136 + ... + 15552004.

Almost surely, 2^231132211330 is an apocalyptic number.

231132211330 is a deficient number, since it is larger than the sum of its proper divisors (187626141230).

231132211330 is a wasteful number, since it uses less digits than its factorization.

231132211330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24934.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231132211330 its reverse (33112231132), we get a palindrome (264244442462).

The spelling of 231132211330 in words is "two hundred thirty-one billion, one hundred thirty-two million, two hundred eleven thousand, three hundred thirty".