113221423 has 8 divisors (see below), whose sum is σ = 133858080. Its totient is φ = 93700320.

The previous prime is 113221421. The next prime is 113221441. The reversal of 113221423 is 324122311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113221423 - 2¹ = 113221421 is a prime.

It is a super-2 number, since 2×113221423² = 25638181252289858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113221423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278668 + ... + 279073.

It is an arithmetic number, because the mean of its divisors is an integer number (16732260).

Almost surely, 2^113221423 is an apocalyptic number.

113221423 is a deficient number, since it is larger than the sum of its proper divisors (20636657).

113221423 is an equidigital number, since it uses as much as digits as its factorization.

113221423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557777.

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

The square root of 113221423 is about 10640.5555776003. Note that the first 4 decimals coincide. The cubic root of 113221423 is about 483.7743851480.

Adding to 113221423 its reverse (324122311), we get a palindrome (437343734).

The spelling of 113221423 in words is "one hundred thirteen million, two hundred twenty-one thousand, four hundred twenty-three".