31545225168 has 40 divisors (see below), whose sum is σ = 81617865408. Its totient is φ = 10498812672.

The previous prime is 31545225139. The next prime is 31545225181. The reversal of 31545225168 is 86152254513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476821 + ... + 538932.

Almost surely, 2^31545225168 is an apocalyptic number.

It is an amenable number.

31545225168 is an abundant number, since it is smaller than the sum of its proper divisors (50072640240).

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

31545225168 is a wasteful number, since it uses less digits than its factorization.

31545225168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016411 (or 1016405 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 31545225168 in words is "thirty-one billion, five hundred forty-five million, two hundred twenty-five thousand, one hundred sixty-eight".