113509511 has 4 divisors (see below), whose sum is σ = 113553000. Its totient is φ = 113466024.

The previous prime is 113509489. The next prime is 113509523. The reversal of 113509511 is 115905311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115905311 = 31 ⋅3738881.

It is a cyclic number.

It is not a de Polignac number, because 113509511 - 2²⁶ = 46400647 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 (113509111) 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, 17561 + ... + 23138.

It is an arithmetic number, because the mean of its divisors is an integer number (28388250).

Almost surely, 2^113509511 is an apocalyptic number.

113509511 is a deficient number, since it is larger than the sum of its proper divisors (43489).

113509511 is an equidigital number, since it uses as much as digits as its factorization.

113509511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43488.

The product of its (nonzero) digits is 675, while the sum is 26.

The square root of 113509511 is about 10654.0842403277. The cubic root of 113509511 is about 484.1843533653.

The spelling of 113509511 in words is "one hundred thirteen million, five hundred nine thousand, five hundred eleven".