113404503 has 4 divisors (see below), whose sum is σ = 151206008. Its totient is φ = 75603000.

The previous prime is 113404481. The next prime is 113404547. The reversal of 113404503 is 305404311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305404311 = 3 ⋅101801437.

It is not a de Polignac number, because 113404503 - 2⁶ = 113404439 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 113404503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113404303) 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, 18900748 + ... + 18900753.

It is an arithmetic number, because the mean of its divisors is an integer number (37801502).

Almost surely, 2^113404503 is an apocalyptic number.

113404503 is a deficient number, since it is larger than the sum of its proper divisors (37801505).

113404503 is an equidigital number, since it uses as much as digits as its factorization.

113404503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37801504.

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

The square root of 113404503 is about 10649.1550369032. The cubic root of 113404503 is about 484.0350004855.

Adding to 113404503 its reverse (305404311), we get a palindrome (418808814).

The spelling of 113404503 in words is "one hundred thirteen million, four hundred four thousand, five hundred three".