31000012332 has 48 divisors (see below), whose sum is σ = 74108547072. Its totient is φ = 10082741760.

The previous prime is 31000012321. The next prime is 31000012333. The reversal of 31000012332 is 23321000013.

It is a super-2 number, since 2×31000012332² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31000012333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104908 + ... + 270195.

It is an arithmetic number, because the mean of its divisors is an integer number (1543928064).

Almost surely, 2^31000012332 is an apocalyptic number.

It is an amenable number.

31000012332 is an abundant number, since it is smaller than the sum of its proper divisors (43108534740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31000012332 is a wasteful number, since it uses less digits than its factorization.

31000012332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375278 (or 375276 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31000012332 its reverse (23321000013), we get a palindrome (54321012345).

The spelling of 31000012332 in words is "thirty-one billion, twelve thousand, three hundred thirty-two".