31502340045 has 32 divisors (see below), whose sum is σ = 61095450240. Its totient is φ = 15273861120.

The previous prime is 31502340017. The next prime is 31502340071. The reversal of 31502340045 is 54004320513.

31502340045 is a `hidden beast` number, since 315 + 0 + 2 + 340 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 31502340045 - 2⁷ = 31502339917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10605364 + ... + 10608333.

It is an arithmetic number, because the mean of its divisors is an integer number (1909232820).

Almost surely, 2^31502340045 is an apocalyptic number.

It is an amenable number.

31502340045 is a deficient number, since it is larger than the sum of its proper divisors (29593110195).

31502340045 is a wasteful number, since it uses less digits than its factorization.

31502340045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21213722 (or 21213716 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 31502340045 its reverse (54004320513), we get a palindrome (85506660558).

The spelling of 31502340045 in words is "thirty-one billion, five hundred two million, three hundred forty thousand, forty-five".