31939845550 has 12 divisors (see below), whose sum is σ = 59408112816. Its totient is φ = 12775938200.

The previous prime is 31939845547. The next prime is 31939845593. The reversal of 31939845550 is 5554893913.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 319398406 + ... + 319398505.

It is an arithmetic number, because the mean of its divisors is an integer number (4950676068).

Almost surely, 2^31939845550 is an apocalyptic number.

31939845550 is a deficient number, since it is larger than the sum of its proper divisors (27468267266).

31939845550 is a wasteful number, since it uses less digits than its factorization.

31939845550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638796923 (or 638796918 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 52.

The spelling of 31939845550 in words is "thirty-one billion, nine hundred thirty-nine million, eight hundred forty-five thousand, five hundred fifty".