31313020996 has 12 divisors (see below), whose sum is σ = 55100538220. Its totient is φ = 15570010080.

The previous prime is 31313020891. The next prime is 31313020997. The reversal of 31313020996 is 69902031313.

It can be written as a sum of positive squares in 2 ways, for example, as 3452737600 + 27860283396 = 58760^2 + 166914^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31313020997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21624291 + ... + 21625738.

Almost surely, 2^31313020996 is an apocalyptic number.

It is an amenable number.

31313020996 is a deficient number, since it is larger than the sum of its proper divisors (23787517224).

31313020996 is a wasteful number, since it uses less digits than its factorization.

31313020996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43250214 (or 43250212 counting only the distinct ones).

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

The spelling of 31313020996 in words is "thirty-one billion, three hundred thirteen million, twenty thousand, nine hundred ninety-six".