31673424672 has 54 divisors (see below), whose sum is σ = 90079891083. Its totient is φ = 10556801472.

The previous prime is 31673424583. The next prime is 31673424677. The reversal of 31673424672 is 27642437613.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

31673424672 is a `hidden beast` number, since 3 + 167 + 3 + 424 + 67 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15836712336 + 15836712336 = 125844^2 + 125844^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125844.

It is not an unprimeable number, because it can be changed into a prime (31673424677) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3015013 + ... + 3025499.

Almost surely, 2^31673424672 is an apocalyptic number.

31673424672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31673424672 is an abundant number, since it is smaller than the sum of its proper divisors (58406466411).

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

31673424672 is an frugal number, since it uses more digits than its factorization.

31673424672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20990 (or 10492 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The spelling of 31673424672 in words is "thirty-one billion, six hundred seventy-three million, four hundred twenty-four thousand, six hundred seventy-two".