31326972 has 24 divisors (see below), whose sum is σ = 76944000. Its totient is φ = 9892656.

The previous prime is 31326961. The next prime is 31326973. The reversal of 31326972 is 27962313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31326973) 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, 68472 + ... + 68927.

It is an arithmetic number, because the mean of its divisors is an integer number (3206000).

Almost surely, 2^31326972 is an apocalyptic number.

It is an amenable number.

31326972 is an abundant number, since it is smaller than the sum of its proper divisors (45617028).

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

31326972 is a wasteful number, since it uses less digits than its factorization.

31326972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137425 (or 137423 counting only the distinct ones).

The product of its digits is 13608, while the sum is 33.

The square root of 31326972 is about 5597.0502945748. The cubic root of 31326972 is about 315.2386601511.

The spelling of 31326972 in words is "thirty-one million, three hundred twenty-six thousand, nine hundred seventy-two".