113404145 has 24 divisors (see below), whose sum is σ = 145043136. Its totient is φ = 84946752.

The previous prime is 113404139. The next prime is 113404147. The reversal of 113404145 is 541404311.

It is a de Polignac number, because none of the positive numbers 2^k-113404145 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 113404145.

It is not an unprimeable number, because it can be changed into a prime (113404147) 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 23 ways as a sum of consecutive naturals, for example, 1040351 + ... + 1040459.

It is an arithmetic number, because the mean of its divisors is an integer number (6043464).

Almost surely, 2^113404145 is an apocalyptic number.

It is an amenable number.

113404145 is a deficient number, since it is larger than the sum of its proper divisors (31638991).

113404145 is an equidigital number, since it uses as much as digits as its factorization.

113404145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 113404145 is about 10649.1382280446. The cubic root of 113404145 is about 484.0344911445.

Adding to 113404145 its reverse (541404311), we get a palindrome (654808456).

The spelling of 113404145 in words is "one hundred thirteen million, four hundred four thousand, one hundred forty-five".