113215309 has 16 divisors (see below), whose sum is σ = 118552896. Its totient is φ = 108035200.

The previous prime is 113215283. The next prime is 113215313. The reversal of 113215309 is 903512311.

It is a cyclic number.

It is not a de Polignac number, because 113215309 - 2¹⁹ = 112691021 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 (113215409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574599 + ... + 574795.

It is an arithmetic number, because the mean of its divisors is an integer number (7409556).

Almost surely, 2^113215309 is an apocalyptic number.

It is an amenable number.

113215309 is a deficient number, since it is larger than the sum of its proper divisors (5337587).

113215309 is a wasteful number, since it uses less digits than its factorization.

113215309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 113215309 is about 10640.2682766930. The cubic root of 113215309 is about 483.7656769909.

The spelling of 113215309 in words is "one hundred thirteen million, two hundred fifteen thousand, three hundred nine".