31212113132 has 12 divisors (see below), whose sum is σ = 55953422616. Its totient is φ = 15225420960.

The previous prime is 31212113099. The next prime is 31212113167. The reversal of 31212113132 is 23131121213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95158718 + ... + 95159045.

It is an arithmetic number, because the mean of its divisors is an integer number (4662785218).

Almost surely, 2^31212113132 is an apocalyptic number.

It is an amenable number.

31212113132 is a deficient number, since it is larger than the sum of its proper divisors (24741309484).

31212113132 is a wasteful number, since it uses less digits than its factorization.

31212113132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190317808 (or 190317806 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 31212113132 its reverse (23131121213), we get a palindrome (54343234345).

The spelling of 31212113132 in words is "thirty-one billion, two hundred twelve million, one hundred thirteen thousand, one hundred thirty-two".