31003130012 has 24 divisors (see below), whose sum is σ = 54726776496. Its totient is φ = 15367426688.

The previous prime is 31003129973. The next prime is 31003130057. The reversal of 31003130012 is 21003130013.

It is a super-2 number, since 2×31003130012² (a number of 22 digits) contains 22 as substring.

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, 175568 + ... + 304680.

It is an arithmetic number, because the mean of its divisors is an integer number (2280282354).

Almost surely, 2^31003130012 is an apocalyptic number.

It is an amenable number.

31003130012 is a deficient number, since it is larger than the sum of its proper divisors (23723646484).

31003130012 is a wasteful number, since it uses less digits than its factorization.

31003130012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129637 (or 129635 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31003130012 its reverse (21003130013), we get a palindrome (52006260025).

Subtracting from 31003130012 its reverse (21003130013), we obtain a palindrome (9999999999).

It can be divided in two parts, 310031 and 30012, that added together give a palindrome (340043).

The spelling of 31003130012 in words is "thirty-one billion, three million, one hundred thirty thousand, twelve".