31234722472 has 32 divisors (see below), whose sum is σ = 62280959400. Its totient is φ = 14634491904.

The previous prime is 31234722443. The next prime is 31234722479. The reversal of 31234722472 is 27422743213.

It can be written as a sum of positive squares in 4 ways, for example, as 31069702756 + 165019716 = 176266^2 + 12846^2 .

It is not an unprimeable number, because it can be changed into a prime (31234722479) 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, 470313 + ... + 532600.

Almost surely, 2^31234722472 is an apocalyptic number.

It is an amenable number.

31234722472 is a deficient number, since it is larger than the sum of its proper divisors (31046236928).

31234722472 is a wasteful number, since it uses less digits than its factorization.

31234722472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003165 (or 1003161 counting only the distinct ones).

The product of its digits is 112896, while the sum is 37.

The spelling of 31234722472 in words is "thirty-one billion, two hundred thirty-four million, seven hundred twenty-two thousand, four hundred seventy-two".