31373034561 has 64 divisors (see below), whose sum is σ = 52302032640. Its totient is φ = 18419166720.

The previous prime is 31373034559. The next prime is 31373034577. The reversal of 31373034561 is 16543037313.

31373034561 is a `hidden beast` number, since 3 + 1 + 37 + 30 + 34 + 561 = 666.

It is not a de Polignac number, because 31373034561 - 2¹ = 31373034559 is a prime.

It is a hoax number, since the sum of its digits (36) 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 (31373034961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2554311 + ... + 2566563.

It is an arithmetic number, because the mean of its divisors is an integer number (817219260).

Almost surely, 2^31373034561 is an apocalyptic number.

It is an amenable number.

31373034561 is a deficient number, since it is larger than the sum of its proper divisors (20928998079).

31373034561 is a wasteful number, since it uses less digits than its factorization.

31373034561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543 (or 12537 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The spelling of 31373034561 in words is "thirty-one billion, three hundred seventy-three million, thirty-four thousand, five hundred sixty-one".