31317704699885 has 4 divisors (see below), whose sum is σ = 37581245639868. Its totient is φ = 25054163759904.

The previous prime is 31317704699863. The next prime is 31317704699933. The reversal of 31317704699885 is 58899640771313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20183697361129 + 11134007338756 = 4492627^2 + 3336766^2 .

It is a cyclic number.

It is not a de Polignac number, because 31317704699885 - 2¹⁴ = 31317704683501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131770469984 + ... + 3131770469993.

It is an arithmetic number, because the mean of its divisors is an integer number (9395311409967).

Almost surely, 2^{31317704699885} is an apocalyptic number.

It is an amenable number.

31317704699885 is a deficient number, since it is larger than the sum of its proper divisors (6263540939983).

31317704699885 is an equidigital number, since it uses as much as digits as its factorization.

31317704699885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263540939982.

The product of its (nonzero) digits is 274337280, while the sum is 71.

The spelling of 31317704699885 in words is "thirty-one trillion, three hundred seventeen billion, seven hundred four million, six hundred ninety-nine thousand, eight hundred eighty-five".