31937728412 has 12 divisors (see below), whose sum is σ = 56088521496. Its totient is φ = 15912436560.

The previous prime is 31937728411. The next prime is 31937728441. The reversal of 31937728412 is 21482773913.

It is a super-2 number, since 2×31937728412² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31937728411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14105639 + ... + 14107902.

It is an arithmetic number, because the mean of its divisors is an integer number (4674043458).

Almost surely, 2^31937728412 is an apocalyptic number.

It is an amenable number.

31937728412 is a deficient number, since it is larger than the sum of its proper divisors (24150793084).

31937728412 is a wasteful number, since it uses less digits than its factorization.

31937728412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28213828 (or 28213826 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The spelling of 31937728412 in words is "thirty-one billion, nine hundred thirty-seven million, seven hundred twenty-eight thousand, four hundred twelve".