31668019152 has 160 divisors (see below), whose sum is σ = 107995659264. Its totient is φ = 7741593600.

The previous prime is 31668019139. The next prime is 31668019153. The reversal of 31668019152 is 25191086613.

It is a super-2 number, since 2×31668019152² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31668019153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189174 + ... + 314837.

Almost surely, 2^31668019152 is an apocalyptic number.

It is an amenable number.

31668019152 is an abundant number, since it is smaller than the sum of its proper divisors (76327640112).

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

31668019152 is a wasteful number, since it uses less digits than its factorization.

31668019152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504057 (or 504051 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 31668019152 in words is "thirty-one billion, six hundred sixty-eight million, nineteen thousand, one hundred fifty-two".