31949057877 has 16 divisors (see below), whose sum is σ = 46482304512. Its totient is φ = 19358503920.

The previous prime is 31949057869. The next prime is 31949057891. The reversal of 31949057877 is 77875094913.

It is not a de Polignac number, because 31949057877 - 2³ = 31949057869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31949057877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31949057807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30918 + ... + 254664.

It is an arithmetic number, because the mean of its divisors is an integer number (2905144032).

Almost surely, 2^31949057877 is an apocalyptic number.

It is an amenable number.

31949057877 is a deficient number, since it is larger than the sum of its proper divisors (14533246635).

31949057877 is a wasteful number, since it uses less digits than its factorization.

31949057877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228088.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 31949057877 in words is "thirty-one billion, nine hundred forty-nine million, fifty-seven thousand, eight hundred seventy-seven".