31368400877 has 16 divisors (see below), whose sum is σ = 34574791680. Its totient is φ = 28222647600.

The previous prime is 31368400859. The next prime is 31368400879. The reversal of 31368400877 is 77800486313.

It is a cyclic number.

It is not a de Polignac number, because 31368400877 - 2⁶ = 31368400813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31368400879) 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, 377708 + ... + 453210.

It is an arithmetic number, because the mean of its divisors is an integer number (2160924480).

Almost surely, 2^31368400877 is an apocalyptic number.

It is an amenable number.

31368400877 is a deficient number, since it is larger than the sum of its proper divisors (3206390803).

31368400877 is a wasteful number, since it uses less digits than its factorization.

31368400877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75904.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 31368400877 in words is "thirty-one billion, three hundred sixty-eight million, four hundred thousand, eight hundred seventy-seven".