113442031 has 4 divisors (see below), whose sum is σ = 113472864. Its totient is φ = 113411200.

The previous prime is 113442023. The next prime is 113442047. The reversal of 113442031 is 130244311.

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

It is a cyclic number.

It is not a de Polignac number, because 113442031 - 2³ = 113442023 is a prime.

It is a super-2 number, since 2×113442031² = 25738188794809922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113442001) 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, 9010 + ... + 17551.

It is an arithmetic number, because the mean of its divisors is an integer number (28368216).

Almost surely, 2^113442031 is an apocalyptic number.

113442031 is a deficient number, since it is larger than the sum of its proper divisors (30833).

113442031 is an equidigital number, since it uses as much as digits as its factorization.

113442031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30832.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 113442031 is about 10650.9169088863. The cubic root of 113442031 is about 484.0883871432.

Adding to 113442031 its reverse (130244311), we get a palindrome (243686342).

The spelling of 113442031 in words is "one hundred thirteen million, four hundred forty-two thousand, thirty-one".