113112043031 has 4 divisors (see below), whose sum is σ = 121812969432. Its totient is φ = 104411116632.

The previous prime is 113112043019. The next prime is 113112043039. The reversal of 113112043031 is 130340211311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113112043031 is a prime.

It is a super-2 number, since 2×113112043031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113112042994 and 113112043012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113112043039) 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, 4350463181 + ... + 4350463206.

It is an arithmetic number, because the mean of its divisors is an integer number (30453242358).

Almost surely, 2^113112043031 is an apocalyptic number.

113112043031 is a deficient number, since it is larger than the sum of its proper divisors (8700926401).

113112043031 is an equidigital number, since it uses as much as digits as its factorization.

113112043031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700926400.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113112043031 its reverse (130340211311), we get a palindrome (243452254342).

The spelling of 113112043031 in words is "one hundred thirteen billion, one hundred twelve million, forty-three thousand, thirty-one".