31213210132 has 24 divisors (see below), whose sum is σ = 58846157216. Its totient is φ = 14400890208.

The previous prime is 31213210121. The next prime is 31213210141. The reversal of 31213210132 is 23101231213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38683 + ... + 252829.

Almost surely, 2^31213210132 is an apocalyptic number.

It is an amenable number.

31213210132 is a deficient number, since it is larger than the sum of its proper divisors (27632947084).

31213210132 is a wasteful number, since it uses less digits than its factorization.

31213210132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216967 (or 216965 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31213210132 its reverse (23101231213), we get a palindrome (54314441345).

The spelling of 31213210132 in words is "thirty-one billion, two hundred thirteen million, two hundred ten thousand, one hundred thirty-two".