31963396608 has 1280 divisors, whose sum is σ = 125391974400. Its totient is φ = 7882997760.

The previous prime is 31963396567. The next prime is 31963396609. The reversal of 31963396608 is 80669336913.

It is a happy number.

31963396608 is a `hidden beast` number, since 3 + 196 + 3 + 396 + 60 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (31963396609) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 863875566 + ... + 863875602.

It is an arithmetic number, because the mean of its divisors is an integer number (97962480).

Almost surely, 2^31963396608 is an apocalyptic number.

31963396608 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 31963396608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62695987200).

31963396608 is an abundant number, since it is smaller than the sum of its proper divisors (93428577792).

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

31963396608 is a wasteful number, since it uses less digits than its factorization.

31963396608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 31963396608 in words is "thirty-one billion, nine hundred sixty-three million, three hundred ninety-six thousand, six hundred eight".