31313101985 has 64 divisors (see below), whose sum is σ = 42511392000. Its totient is φ = 21948226560.

The previous prime is 31313101969. The next prime is 31313102039. The reversal of 31313101985 is 58910131313.

It is not a de Polignac number, because 31313101985 - 2⁴ = 31313101969 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44164811 + ... + 44165519.

It is an arithmetic number, because the mean of its divisors is an integer number (664240500).

Almost surely, 2^31313101985 is an apocalyptic number.

It is an amenable number.

31313101985 is a deficient number, since it is larger than the sum of its proper divisors (11198290015).

31313101985 is a wasteful number, since it uses less digits than its factorization.

31313101985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 31313101985 in words is "thirty-one billion, three hundred thirteen million, one hundred one thousand, nine hundred eighty-five".