31210120021132 has 48 divisors (see below), whose sum is σ = 59182482591232. Its totient is φ = 14315679996480.

The previous prime is 31210120021123. The next prime is 31210120021139. The reversal of 31210120021132 is 23112002101213.

It is a super-2 number, since 2×31210120021132² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31210120021139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238203343 + ... + 238334329.

Almost surely, 2^{31210120021132} is an apocalyptic number.

It is an amenable number.

31210120021132 is a deficient number, since it is larger than the sum of its proper divisors (27972362570100).

31210120021132 is a wasteful number, since it uses less digits than its factorization.

31210120021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159278 (or 159276 counting only the distinct ones).

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

Adding to 31210120021132 its reverse (23112002101213), we get a palindrome (54322122122345).

The spelling of 31210120021132 in words is "thirty-one trillion, two hundred ten billion, one hundred twenty million, twenty-one thousand, one hundred thirty-two".