31320330032 has 20 divisors (see below), whose sum is σ = 61055433720. Its totient is φ = 15564089088.

The previous prime is 31320329983. The next prime is 31320330053. The reversal of 31320330032 is 23003302313.

It is a super-2 number, since 2×31320330032² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31320329986 and 31320330013.

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, 6002057 + ... + 6007272.

It is an arithmetic number, because the mean of its divisors is an integer number (3052771686).

Almost surely, 2^31320330032 is an apocalyptic number.

It is an amenable number.

31320330032 is a deficient number, since it is larger than the sum of its proper divisors (29735103688).

31320330032 is a wasteful number, since it uses less digits than its factorization.

31320330032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12009500 (or 12009494 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 31320330032 its reverse (23003302313), we get a palindrome (54323632345).

The spelling of 31320330032 in words is "thirty-one billion, three hundred twenty million, three hundred thirty thousand, thirty-two".