31323510672 has 40 divisors (see below), whose sum is σ = 80930462976. Its totient is φ = 10439700096.

The previous prime is 31323510649. The next prime is 31323510679. The reversal of 31323510672 is 27601532313.

It is not an unprimeable number, because it can be changed into a prime (31323510679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330273 + ... + 414399.

Almost surely, 2^31323510672 is an apocalyptic number.

It is an amenable number.

31323510672 is an abundant number, since it is smaller than the sum of its proper divisors (49606952304).

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

31323510672 is a wasteful number, since it uses less digits than its factorization.

31323510672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91895 (or 91889 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The spelling of 31323510672 in words is "thirty-one billion, three hundred twenty-three million, five hundred ten thousand, six hundred seventy-two".