113133509 has 4 divisors (see below), whose sum is σ = 113366304. Its totient is φ = 112900716.

The previous prime is 113133499. The next prime is 113133529. The reversal of 113133509 is 905331311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113133509 - 2⁸ = 113133253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113133529) 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, 115667 + ... + 116640.

It is an arithmetic number, because the mean of its divisors is an integer number (28341576).

Almost surely, 2^113133509 is an apocalyptic number.

It is an amenable number.

113133509 is a deficient number, since it is larger than the sum of its proper divisors (232795).

113133509 is an equidigital number, since it uses as much as digits as its factorization.

113133509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232794.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 113133509 is about 10636.4236940806. The cubic root of 113133509 is about 483.6491392568.

The spelling of 113133509 in words is "one hundred thirteen million, one hundred thirty-three thousand, five hundred nine".