113520405 has 16 divisors (see below), whose sum is σ = 182220480. Its totient is φ = 60348288.

The previous prime is 113520401. The next prime is 113520427. The reversal of 113520405 is 504025311.

It is not a de Polignac number, because 113520405 - 2² = 113520401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113520401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7395 + ... + 16784.

It is an arithmetic number, because the mean of its divisors is an integer number (11388780).

Almost surely, 2^113520405 is an apocalyptic number.

113520405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113520405 is a deficient number, since it is larger than the sum of its proper divisors (68700075).

113520405 is a wasteful number, since it uses less digits than its factorization.

113520405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24500.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 113520405 is about 10654.5954873942. The cubic root of 113520405 is about 484.1998426271.

Adding to 113520405 its reverse (504025311), we get a palindrome (617545716).

The spelling of 113520405 in words is "one hundred thirteen million, five hundred twenty thousand, four hundred five".