31312303132 has 24 divisors (see below), whose sum is σ = 62377080192. Its totient is φ = 13614044400.

The previous prime is 31312303123. The next prime is 31312303189. The reversal of 31312303132 is 23130321313.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 15469494 + ... + 15471517.

It is an arithmetic number, because the mean of its divisors is an integer number (2599045008).

Almost surely, 2^31312303132 is an apocalyptic number.

It is an amenable number.

31312303132 is a deficient number, since it is larger than the sum of its proper divisors (31064777060).

31312303132 is a wasteful number, since it uses less digits than its factorization.

31312303132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30941049 (or 30941047 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31312303132 its reverse (23130321313), we get a palindrome (54442624445).

The spelling of 31312303132 in words is "thirty-one billion, three hundred twelve million, three hundred three thousand, one hundred thirty-two".