31716503126405 has 6 divisors (see below), whose sum is σ = 38059818863238. Its totient is φ = 25373192426760.

The previous prime is 31716503126339. The next prime is 31716503126411. The reversal of 31716503126405 is 50462130561713.

It can be written as a sum of positive squares in only one way, i.e., 25373202501124 + 6343300625281 = 5037182^2 + 2518591^2 .

It is not a de Polignac number, because 31716503126405 - 2¹⁴ = 31716503110021 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 5 ways as a sum of consecutive naturals, for example, 11333660 + ... + 13852250.

It is an arithmetic number, because the mean of its divisors is an integer number (6343303143873).

Almost surely, 2^{31716503126405} is an apocalyptic number.

It is an amenable number.

31716503126405 is a deficient number, since it is larger than the sum of its proper divisors (6343315736833).

31716503126405 is an frugal number, since it uses more digits than its factorization.

31716503126405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037187 (or 2518596 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 31716503126405 in words is "thirty-one trillion, seven hundred sixteen billion, five hundred three million, one hundred twenty-six thousand, four hundred five".