113121231311 has 8 divisors (see below), whose sum is σ = 123555300048. Its totient is φ = 102712216000.

The previous prime is 113121231271. The next prime is 113121231313. The reversal of 113121231311 is 113132121311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113121231311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121231313) 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, 6253910 + ... + 6271971.

It is an arithmetic number, because the mean of its divisors is an integer number (15444412506).

Almost surely, 2^113121231311 is an apocalyptic number.

113121231311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113121231311 is a deficient number, since it is larger than the sum of its proper divisors (10434068737).

113121231311 is a wasteful number, since it uses less digits than its factorization.

113121231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12526713.

The product of its digits is 108, while the sum is 20.

Adding to 113121231311 its reverse (113132121311), we get a palindrome (226253352622).

Subtracting 113121231311 from its reverse (113132121311), we obtain a square (10890000 = 3300²).

The spelling of 113121231311 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred eleven".