113121233131 has 4 divisors (see below), whose sum is σ = 113529613312. Its totient is φ = 112712852952.

The previous prime is 113121233083. The next prime is 113121233177. The reversal of 113121233131 is 131332121311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131332121311 = 41 ⋅3203222471.

It is a cyclic number.

It is not a de Polignac number, because 113121233131 - 2⁷ = 113121233003 is a prime.

It is a super-2 number, since 2×113121233131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113121233231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204189675 + ... + 204190228.

It is an arithmetic number, because the mean of its divisors is an integer number (28382403328).

Almost surely, 2^113121233131 is an apocalyptic number.

113121233131 is a deficient number, since it is larger than the sum of its proper divisors (408380181).

113121233131 is an equidigital number, since it uses as much as digits as its factorization.

113121233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408380180.

The product of its digits is 324, while the sum is 22.

Adding to 113121233131 its reverse (131332121311), we get a palindrome (244453354442).

The spelling of 113121233131 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty-one".