31677809040 has 120 divisors (see below), whose sum is σ = 107972636928. Its totient is φ = 8321322240.

The previous prime is 31677808999. The next prime is 31677809041. The reversal of 31677809040 is 4090877613.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (31677809041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280096 + ... + 376575.

Almost surely, 2^31677809040 is an apocalyptic number.

31677809040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31677809040 is an abundant number, since it is smaller than the sum of its proper divisors (76294827888).

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

31677809040 is a wasteful number, since it uses less digits than its factorization.

31677809040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656757 (or 656748 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 31677809040 in words is "thirty-one billion, six hundred seventy-seven million, eight hundred nine thousand, forty".