31072299572 has 54 divisors (see below), whose sum is σ = 57798215874. Its totient is φ = 14614097760.

The previous prime is 31072299571. The next prime is 31072299589. The reversal of 31072299572 is 27599227013.

It can be written as a sum of positive squares in only one way, i.e., 30648104356 + 424195216 = 175066^2 + 20596^2 .

It is a super-2 number, since 2×31072299572² (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 (31072299571) 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 17 ways as a sum of consecutive naturals, for example, 106048658 + ... + 106048950.

It is an arithmetic number, because the mean of its divisors is an integer number (1070337331).

Almost surely, 2^31072299572 is an apocalyptic number.

It is an amenable number.

31072299572 is a deficient number, since it is larger than the sum of its proper divisors (26725916302).

31072299572 is a wasteful number, since it uses less digits than its factorization.

31072299572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 31072299572 in words is "thirty-one billion, seventy-two million, two hundred ninety-nine thousand, five hundred seventy-two".