31506354506 has 32 divisors (see below), whose sum is σ = 52242796800. Its totient is φ = 14130492480.

The previous prime is 31506354463. The next prime is 31506354521. The reversal of 31506354506 is 60545360513.

It is a self number, because there is not a number n which added to its sum of digits gives 31506354506.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3104216 + ... + 3114348.

It is an arithmetic number, because the mean of its divisors is an integer number (1632587400).

Almost surely, 2^31506354506 is an apocalyptic number.

31506354506 is a deficient number, since it is larger than the sum of its proper divisors (20736442294).

31506354506 is a wasteful number, since it uses less digits than its factorization.

31506354506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12014.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 31506354506 in words is "thirty-one billion, five hundred six million, three hundred fifty-four thousand, five hundred six".