31273516317 has 32 divisors (see below), whose sum is σ = 45380874240. Its totient is φ = 19084032000.

The previous prime is 31273516283. The next prime is 31273516333. The reversal of 31273516317 is 71361537213.

It is a happy number.

It is not a de Polignac number, because 31273516317 - 2⁸ = 31273516061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31273516517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1118842 + ... + 1146452.

It is an arithmetic number, because the mean of its divisors is an integer number (1418152320).

Almost surely, 2^31273516317 is an apocalyptic number.

It is an amenable number.

31273516317 is a deficient number, since it is larger than the sum of its proper divisors (14107357923).

31273516317 is a wasteful number, since it uses less digits than its factorization.

31273516317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28305.

The product of its digits is 79380, while the sum is 39.

The spelling of 31273516317 in words is "thirty-one billion, two hundred seventy-three million, five hundred sixteen thousand, three hundred seventeen".