113121310312 has 8 divisors (see below), whose sum is σ = 212102456850. Its totient is φ = 56560655152.

The previous prime is 113121310301. The next prime is 113121310319. The reversal of 113121310312 is 213013121311.

It can be written as a sum of positive squares in only one way, i.e., 105226276996 + 7895033316 = 324386^2 + 88854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 113121310312.

It is not an unprimeable number, because it can be changed into a prime (113121310319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7070081887 + ... + 7070081902.

Almost surely, 2^113121310312 is an apocalyptic number.

It is an amenable number.

113121310312 is a deficient number, since it is larger than the sum of its proper divisors (98981146538).

113121310312 is a wasteful number, since it uses less digits than its factorization.

113121310312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14140163795 (or 14140163791 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 113121310312 its reverse (213013121311), we get a palindrome (326134431623).

The spelling of 113121310312 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred ten thousand, three hundred twelve".