31000303012 has 48 divisors (see below), whose sum is σ = 65710189440. Its totient is φ = 12492421632.

The previous prime is 31000302947. The next prime is 31000303027. The reversal of 31000303012 is 21030300013.

It is a super-2 number, since 2×31000303012² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000302983 and 31000303001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478383 + ... + 539305.

It is an arithmetic number, because the mean of its divisors is an integer number (1368962280).

Almost surely, 2^31000303012 is an apocalyptic number.

It is an amenable number.

31000303012 is an abundant number, since it is smaller than the sum of its proper divisors (34709886428).

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

31000303012 is a wasteful number, since it uses less digits than its factorization.

31000303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62020 (or 62018 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 31000303012 its reverse (21030300013), we get a palindrome (52030603025).

The spelling of 31000303012 in words is "thirty-one billion, three hundred three thousand, twelve".