31377536380 has 24 divisors (see below), whose sum is σ = 65909027520. Its totient is φ = 12547928640.

The previous prime is 31377536371. The next prime is 31377536387. The reversal of 31377536380 is 8363577313.

It is a self number, because there is not a number n which added to its sum of digits gives 31377536380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31377536387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108595 + ... + 273034.

It is an arithmetic number, because the mean of its divisors is an integer number (2746209480).

Almost surely, 2^31377536380 is an apocalyptic number.

It is an amenable number.

31377536380 is an abundant number, since it is smaller than the sum of its proper divisors (34531491140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31377536380 is a wasteful number, since it uses less digits than its factorization.

31377536380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385749 (or 385747 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 31377536380 in words is "thirty-one billion, three hundred seventy-seven million, five hundred thirty-six thousand, three hundred eighty".