31607388650 has 48 divisors (see below), whose sum is σ = 60199343424. Its totient is φ = 12340231680.

The previous prime is 31607388587. The next prime is 31607388667. The reversal of 31607388650 is 5688370613.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31607388595 and 31607388604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3644219 + ... + 3652881.

It is an arithmetic number, because the mean of its divisors is an integer number (1254152988).

Almost surely, 2^31607388650 is an apocalyptic number.

31607388650 is a deficient number, since it is larger than the sum of its proper divisors (28591954774).

31607388650 is a wasteful number, since it uses less digits than its factorization.

31607388650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415 (or 10410 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 31607388650 in words is "thirty-one billion, six hundred seven million, three hundred eighty-eight thousand, six hundred fifty".