113520423 has 4 divisors (see below), whose sum is σ = 151360568. Its totient is φ = 75680280.

The previous prime is 113520401. The next prime is 113520427. The reversal of 113520423 is 324025311.

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

It is not a de Polignac number, because 113520423 - 2⁵ = 113520391 is a prime.

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 113520423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113520427) 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, 18920068 + ... + 18920073.

It is an arithmetic number, because the mean of its divisors is an integer number (37840142).

Almost surely, 2^113520423 is an apocalyptic number.

113520423 is a deficient number, since it is larger than the sum of its proper divisors (37840145).

113520423 is an equidigital number, since it uses as much as digits as its factorization.

113520423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37840144.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 113520423 is about 10654.5963321001. The cubic root of 113520423 is about 484.1998682190.

Adding to 113520423 its reverse (324025311), we get a palindrome (437545734).

The spelling of 113520423 in words is "one hundred thirteen million, five hundred twenty thousand, four hundred twenty-three".