31325253536 has 48 divisors (see below), whose sum is σ = 61938525600. Its totient is φ = 15594985728.

The previous prime is 31325253527. The next prime is 31325253539. The reversal of 31325253536 is 63535252313.

It is a self number, because there is not a number n which added to its sum of digits gives 31325253536.

It is not an unprimeable number, because it can be changed into a prime (31325253539) 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, 8596931 + ... + 8600573.

It is an arithmetic number, because the mean of its divisors is an integer number (1290385950).

Almost surely, 2^31325253536 is an apocalyptic number.

It is an amenable number.

31325253536 is a deficient number, since it is larger than the sum of its proper divisors (30613272064).

31325253536 is a wasteful number, since it uses less digits than its factorization.

31325253536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741 (or 4733 counting only the distinct ones).

The product of its digits is 243000, while the sum is 38.

The spelling of 31325253536 in words is "thirty-one billion, three hundred twenty-five million, two hundred fifty-three thousand, five hundred thirty-six".