31717672080 has 80 divisors (see below), whose sum is σ = 99569460480. Its totient is φ = 8350977024.

The previous prime is 31717672061. The next prime is 31717672081. The reversal of 31717672080 is 8027671713.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (31717672081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817477 + ... + 855396.

It is an arithmetic number, because the mean of its divisors is an integer number (1244618256).

Almost surely, 2^31717672080 is an apocalyptic number.

31717672080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31717672080 is an abundant number, since it is smaller than the sum of its proper divisors (67851788400).

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

31717672080 is a wasteful number, since it uses less digits than its factorization.

31717672080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672968 (or 1672962 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The spelling of 31717672080 in words is "thirty-one billion, seven hundred seventeen million, six hundred seventy-two thousand, eighty".