31312020032 has 28 divisors (see below), whose sum is σ = 62159546496. Its totient is φ = 15649772160.

The previous prime is 31312020031. The next prime is 31312020037. The reversal of 31312020032 is 23002021313.

It is not an unprimeable number, because it can be changed into a prime (31312020031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66557 + ... + 258947.

Almost surely, 2^31312020032 is an apocalyptic number.

31312020032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31312020032 is a deficient number, since it is larger than the sum of its proper divisors (30847526464).

31312020032 is a wasteful number, since it uses less digits than its factorization.

31312020032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194946 (or 194936 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31312020032 its reverse (23002021313), we get a palindrome (54314041345).

The spelling of 31312020032 in words is "thirty-one billion, three hundred twelve million, twenty thousand, thirty-two".