210112131231 has 24 divisors (see below), whose sum is σ = 308212734960. Its totient is φ = 137912976000.

The previous prime is 210112131221. The next prime is 210112131233. The reversal of 210112131231 is 132131211012.

210112131231 is a `hidden beast` number, since 210 + 11 + 213 + 1 + 231 = 666.

It is not a de Polignac number, because 210112131231 - 2²⁹ = 209575260319 is a prime.

It is a super-2 number, since 2×210112131231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112131233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482950 + ... + 808371.

It is an arithmetic number, because the mean of its divisors is an integer number (12842197290).

Almost surely, 2^210112131231 is an apocalyptic number.

210112131231 is a deficient number, since it is larger than the sum of its proper divisors (98100603729).

210112131231 is a wasteful number, since it uses less digits than its factorization.

210112131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291607 (or 1291604 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 210112131231 its reverse (132131211012), we get a palindrome (342243342243).

The spelling of 210112131231 in words is "two hundred ten billion, one hundred twelve million, one hundred thirty-one thousand, two hundred thirty-one".