31243703572 has 12 divisors (see below), whose sum is σ = 57892744980. Its totient is φ = 14702919296.

The previous prime is 31243703537. The next prime is 31243703599. The reversal of 31243703572 is 27530734213.

It can be written as a sum of positive squares in 2 ways, for example, as 22826375056 + 8417328516 = 151084^2 + 91746^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229733047 + ... + 229733182.

It is an arithmetic number, because the mean of its divisors is an integer number (4824395415).

Almost surely, 2^31243703572 is an apocalyptic number.

It is an amenable number.

31243703572 is a deficient number, since it is larger than the sum of its proper divisors (26649041408).

31243703572 is a wasteful number, since it uses less digits than its factorization.

31243703572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459466250 (or 459466248 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 31243703572 in words is "thirty-one billion, two hundred forty-three million, seven hundred three thousand, five hundred seventy-two".