210131212312 has 24 divisors (see below), whose sum is σ = 458321905260. Its totient is φ = 90056233680.

The previous prime is 210131212241. The next prime is 210131212321. The reversal of 210131212312 is 213212131012.

It is a self number, because there is not a number n which added to its sum of digits gives 210131212312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268024114 + ... + 268024897.

Almost surely, 2^210131212312 is an apocalyptic number.

It is an amenable number.

210131212312 is an abundant number, since it is smaller than the sum of its proper divisors (248190692948).

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

210131212312 is a wasteful number, since it uses less digits than its factorization.

210131212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536049031 (or 536049020 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 210131212312 its reverse (213212131012), we get a palindrome (423343343324).

The spelling of 210131212312 in words is "two hundred ten billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twelve".