31313130994 has 64 divisors (see below), whose sum is σ = 55397468160. Its totient is φ = 13164560640.

The previous prime is 31313130917. The next prime is 31313130997. The reversal of 31313130994 is 49903131313.

It is not an unprimeable number, because it can be changed into a prime (31313130997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1040077 + ... + 1069759.

It is an arithmetic number, because the mean of its divisors is an integer number (865585440).

Almost surely, 2^31313130994 is an apocalyptic number.

31313130994 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31313130994 is a deficient number, since it is larger than the sum of its proper divisors (24084337166).

31313130994 is a wasteful number, since it uses less digits than its factorization.

31313130994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29815.

The product of its (nonzero) digits is 26244, while the sum is 37.

The spelling of 31313130994 in words is "thirty-one billion, three hundred thirteen million, one hundred thirty thousand, nine hundred ninety-four".