113215115309 has 4 divisors (see below), whose sum is σ = 113223529404. Its totient is φ = 113206701216.

The previous prime is 113215115287. The next prime is 113215115341. The reversal of 113215115309 is 903511512311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91080222025 + 22134893284 = 301795^2 + 148778^2 .

It is a cyclic number.

It is not a de Polignac number, because 113215115309 - 2⁸ = 113215115053 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 (113215115369) 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, 4186832 + ... + 4213785.

It is an arithmetic number, because the mean of its divisors is an integer number (28305882351).

Almost surely, 2^113215115309 is an apocalyptic number.

It is an amenable number.

113215115309 is a deficient number, since it is larger than the sum of its proper divisors (8414095).

113215115309 is an equidigital number, since it uses as much as digits as its factorization.

113215115309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414094.

The product of its (nonzero) digits is 4050, while the sum is 32.

The spelling of 113215115309 in words is "one hundred thirteen billion, two hundred fifteen million, one hundred fifteen thousand, three hundred nine".