113223431 has 4 divisors (see below), whose sum is σ = 114087864. Its totient is φ = 112359000.

The previous prime is 113223391. The next prime is 113223433. The reversal of 113223431 is 134322311.

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 113223431 - 2¹⁴ = 113207047 is a prime.

It is a super-2 number, since 2×113223431² = 25639090654823522, 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 (113223433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432020 + ... + 432281.

It is an arithmetic number, because the mean of its divisors is an integer number (28521966).

Almost surely, 2^113223431 is an apocalyptic number.

113223431 is a deficient number, since it is larger than the sum of its proper divisors (864433).

113223431 is an equidigital number, since it uses as much as digits as its factorization.

113223431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864432.

The product of its digits is 432, while the sum is 20.

The square root of 113223431 is about 10640.6499331573. The cubic root of 113223431 is about 483.7772450697. Note that the first 3 decimals are identical.

Adding to 113223431 its reverse (134322311), we get a palindrome (247545742).

The spelling of 113223431 in words is "one hundred thirteen million, two hundred twenty-three thousand, four hundred thirty-one".