31525213468 has 24 divisors (see below), whose sum is σ = 64119081600. Its totient is φ = 13281808368.

The previous prime is 31525213463. The next prime is 31525213493. The reversal of 31525213468 is 86431252513.

It is a self number, because there is not a number n which added to its sum of digits gives 31525213468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31525213463) 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, 9539878 + ... + 9543181.

It is an arithmetic number, because the mean of its divisors is an integer number (2671628400).

Almost surely, 2^31525213468 is an apocalyptic number.

It is an amenable number.

31525213468 is an abundant number, since it is smaller than the sum of its proper divisors (32593868132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31525213468 is a wasteful number, since it uses less digits than its factorization.

31525213468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19083129 (or 19083127 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The spelling of 31525213468 in words is "thirty-one billion, five hundred twenty-five million, two hundred thirteen thousand, four hundred sixty-eight".