31313664045 has 48 divisors (see below), whose sum is σ = 58103066112. Its totient is φ = 16161871680.

The previous prime is 31313664043. The next prime is 31313664049. The reversal of 31313664045 is 54046631313.

31313664045 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 3 + 6 + 640 + 4 + 5 = 666.

It is not a de Polignac number, because 31313664045 - 2¹ = 31313664043 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313664043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378022 + ... + 453351.

It is an arithmetic number, because the mean of its divisors is an integer number (1210480544).

Almost surely, 2^31313664045 is an apocalyptic number.

It is an amenable number.

31313664045 is a deficient number, since it is larger than the sum of its proper divisors (26789402067).

31313664045 is an equidigital number, since it uses as much as digits as its factorization.

31313664045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831424 (or 831412 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 31313664045 in words is "thirty-one billion, three hundred thirteen million, six hundred sixty-four thousand, forty-five".