113442220231 has 4 divisors (see below), whose sum is σ = 113447104200. Its totient is φ = 113437336264.

The previous prime is 113442220219. The next prime is 113442220247. The reversal of 113442220231 is 132022244311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132022244311 = 2053 ⋅64306987.

It is a cyclic number.

It is not a de Polignac number, because 113442220231 - 2⁷ = 113442220103 is a prime.

It is a super-2 number, since 2×113442220231² (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 = 113442220196 and 113442220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113442220201) 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, 2406976 + ... + 2453653.

It is an arithmetic number, because the mean of its divisors is an integer number (28361776050).

Almost surely, 2^113442220231 is an apocalyptic number.

113442220231 is a deficient number, since it is larger than the sum of its proper divisors (4883969).

113442220231 is an equidigital number, since it uses as much as digits as its factorization.

113442220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4883968.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 113442220231 its reverse (132022244311), we get a palindrome (245464464542).

The spelling of 113442220231 in words is "one hundred thirteen billion, four hundred forty-two million, two hundred twenty thousand, two hundred thirty-one".