31705452506 has 32 divisors (see below), whose sum is σ = 61976275200. Its totient is φ = 11805002496.

The previous prime is 31705452487. The next prime is 31705452511. The reversal of 31705452506 is 60525450713.

It is a happy number.

It is a super-2 number, since 2×31705452506² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31705452506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5120606 + ... + 5126793.

It is an arithmetic number, because the mean of its divisors is an integer number (1936758600).

Almost surely, 2^31705452506 is an apocalyptic number.

31705452506 is a deficient number, since it is larger than the sum of its proper divisors (30270822694).

31705452506 is a wasteful number, since it uses less digits than its factorization.

31705452506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247438.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 31705452506 in words is "thirty-one billion, seven hundred five million, four hundred fifty-two thousand, five hundred six".