113631665312 has 96 divisors (see below), whose sum is σ = 252072269568. Its totient is φ = 50390208000.

The previous prime is 113631665309. The next prime is 113631665317. The reversal of 113631665312 is 213566136311.

It is not an unprimeable number, because it can be changed into a prime (113631665317) 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 15 ways as a sum of consecutive naturals, for example, 1713737 + ... + 1778807.

It is an arithmetic number, because the mean of its divisors is an integer number (2625752808).

Almost surely, 2^113631665312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113631665312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126036134784).

113631665312 is an abundant number, since it is smaller than the sum of its proper divisors (138440604256).

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

113631665312 is an equidigital number, since it uses as much as digits as its factorization.

113631665312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65155 (or 65125 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The spelling of 113631665312 in words is "one hundred thirteen billion, six hundred thirty-one million, six hundred sixty-five thousand, three hundred twelve".