31113868608 has 224 divisors, whose sum is σ = 100471833600. Its totient is φ = 9398011392.

The previous prime is 31113868561. The next prime is 31113868651. The reversal of 31113868608 is 80686831113.

31113868608 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 38 + 6 + 8 + 608 = 666.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 734535 + ... + 775737.

Almost surely, 2^31113868608 is an apocalyptic number.

31113868608 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31113868608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50235916800).

31113868608 is an abundant number, since it is smaller than the sum of its proper divisors (69357964992).

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

31113868608 is a wasteful number, since it uses less digits than its factorization.

31113868608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41266 (or 41250 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 31113868608 in words is "thirty-one billion, one hundred thirteen million, eight hundred sixty-eight thousand, six hundred eight".