31804005768 has 32 divisors (see below), whose sum is σ = 79517592000. Its totient is φ = 10600324928.

The previous prime is 31804005767. The next prime is 31804005787. The reversal of 31804005768 is 86750040813.

It is a super-2 number, since 2×31804005768² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31804005767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219805 + ... + 334547.

It is an arithmetic number, because the mean of its divisors is an integer number (2484924750).

Almost surely, 2^31804005768 is an apocalyptic number.

It is an amenable number.

31804005768 is an abundant number, since it is smaller than the sum of its proper divisors (47713586232).

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

31804005768 is a wasteful number, since it uses less digits than its factorization.

31804005768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126301 (or 126297 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 31804005768 in words is "thirty-one billion, eight hundred four million, five thousand, seven hundred sixty-eight".