31593899168 has 24 divisors (see below), whose sum is σ = 66985142868. Its totient is φ = 14581799424.

The previous prime is 31593899167. The next prime is 31593899213. The reversal of 31593899168 is 86199839513.

It can be written as a sum of positive squares in 2 ways, for example, as 24008882704 + 7585016464 = 154948^2 + 87092^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31593899168.

It is not an unprimeable number, because it can be changed into a prime (31593899167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37973021 + ... + 37973852.

Almost surely, 2^31593899168 is an apocalyptic number.

It is an amenable number.

31593899168 is an abundant number, since it is smaller than the sum of its proper divisors (35391243700).

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

31593899168 is a wasteful number, since it uses less digits than its factorization.

31593899168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75946896 (or 75946888 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 62.

The spelling of 31593899168 in words is "thirty-one billion, five hundred ninety-three million, eight hundred ninety-nine thousand, one hundred sixty-eight".