113613512131 has 8 divisors (see below), whose sum is σ = 133353311840. Its totient is φ = 94751036928.

The previous prime is 113613512059. The next prime is 113613512147. The reversal of 113613512131 is 131215316311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113613512131 - 2¹¹ = 113613510083 is a prime.

It is a super-2 number, since 2×113613512131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113613512131.

It is not an unprimeable number, because it can be changed into a prime (113613522131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219330846 + ... + 219331363.

It is an arithmetic number, because the mean of its divisors is an integer number (16669163980).

Almost surely, 2^113613512131 is an apocalyptic number.

113613512131 is a deficient number, since it is larger than the sum of its proper divisors (19739799709).

113613512131 is an equidigital number, since it uses as much as digits as its factorization.

113613512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438662253.

The product of its digits is 1620, while the sum is 28.

Adding to 113613512131 its reverse (131215316311), we get a palindrome (244828828442).

The spelling of 113613512131 in words is "one hundred thirteen billion, six hundred thirteen million, five hundred twelve thousand, one hundred thirty-one".