1113242431 has 4 divisors (see below), whose sum is σ = 1272277072. Its totient is φ = 954207792.

The previous prime is 1113242413. The next prime is 1113242447. The reversal of 1113242431 is 1342423111.

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 1113242431 - 2⁹ = 1113241919 is a prime.

It is a super-2 number, since 2×1113242431² = 2478617420357579522, 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 (1113242461) 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, 79517310 + ... + 79517323.

It is an arithmetic number, because the mean of its divisors is an integer number (318069268).

Almost surely, 2^1113242431 is an apocalyptic number.

1113242431 is a deficient number, since it is larger than the sum of its proper divisors (159034641).

1113242431 is an equidigital number, since it uses as much as digits as its factorization.

1113242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159034640.

The product of its digits is 576, while the sum is 22.

The square root of 1113242431 is about 33365.2878153329. The cubic root of 1113242431 is about 1036.4059963055.

Adding to 1113242431 its reverse (1342423111), we get a palindrome (2455665542).

The spelling of 1113242431 in words is "one billion, one hundred thirteen million, two hundred forty-two thousand, four hundred thirty-one".