31347488877 has 48 divisors (see below), whose sum is σ = 44373923328. Its totient is φ = 19680566400.

The previous prime is 31347488833. The next prime is 31347488911. The reversal of 31347488877 is 77888474313.

It is not a de Polignac number, because 31347488877 - 2¹⁸ = 31347226733 is a prime.

It is a super-2 number, since 2×31347488877² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31347488877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31347488177) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 35743563 + ... + 35744439.

It is an arithmetic number, because the mean of its divisors is an integer number (924456736).

Almost surely, 2^31347488877 is an apocalyptic number.

It is an amenable number.

31347488877 is a deficient number, since it is larger than the sum of its proper divisors (13026434451).

31347488877 is a wasteful number, since it uses less digits than its factorization.

31347488877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1227 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 60.

The spelling of 31347488877 in words is "thirty-one billion, three hundred forty-seven million, four hundred eighty-eight thousand, eight hundred seventy-seven".