113504531 has 8 divisors (see below), whose sum is σ = 132367200. Its totient is φ = 97289304.

The previous prime is 113504497. The next prime is 113504543. The reversal of 113504531 is 135405311.

It is a de Polignac number, because none of the positive numbers 2^k-113504531 is a prime.

It is a super-2 number, since 2×113504531² = 25766557115059922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113504497 and 113504506.

It is not an unprimeable number, because it can be changed into a prime (113504431) 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, 165116 + ... + 165801.

It is an arithmetic number, because the mean of its divisors is an integer number (16545900).

Almost surely, 2^113504531 is an apocalyptic number.

113504531 is a deficient number, since it is larger than the sum of its proper divisors (18862669).

113504531 is an frugal number, since it uses more digits than its factorization.

113504531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330938 (or 330924 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 113504531 is about 10653.8505245756. The cubic root of 113504531 is about 484.1772723923.

Adding to 113504531 its reverse (135405311), we get a palindrome (248909842).

The spelling of 113504531 in words is "one hundred thirteen million, five hundred four thousand, five hundred thirty-one".