113312409 has 32 divisors (see below), whose sum is σ = 187637760. Its totient is φ = 59356800.

The previous prime is 113312399. The next prime is 113312411. The reversal of 113312409 is 904213311.

It is not a de Polignac number, because 113312409 - 2⁵ = 113312377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113312449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7789 + ... + 16949.

It is an arithmetic number, because the mean of its divisors is an integer number (5863680).

Almost surely, 2^113312409 is an apocalyptic number.

113312409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

113312409 is a deficient number, since it is larger than the sum of its proper divisors (74325351).

113312409 is a wasteful number, since it uses less digits than its factorization.

113312409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 113312409 is about 10644.8301536474. The cubic root of 113312409 is about 483.9039392834.

The spelling of 113312409 in words is "one hundred thirteen million, three hundred twelve thousand, four hundred nine".