113611115 has 4 divisors (see below), whose sum is σ = 136333344. Its totient is φ = 90888888.

The previous prime is 113611111. The next prime is 113611139. The reversal of 113611115 is 511116311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511116311 = 1093 ⋅467627.

It is a cyclic number.

It is not a de Polignac number, because 113611115 - 2² = 113611111 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (113611111) 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, 11361107 + ... + 11361116.

It is an arithmetic number, because the mean of its divisors is an integer number (34083336).

Almost surely, 2^113611115 is an apocalyptic number.

113611115 is a deficient number, since it is larger than the sum of its proper divisors (22722229).

113611115 is an equidigital number, since it uses as much as digits as its factorization.

113611115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22722228.

The product of its digits is 90, while the sum is 20.

The square root of 113611115 is about 10658.8514859716. The cubic root of 113611115 is about 484.3287770807.

Adding to 113611115 its reverse (511116311), we get a palindrome (624727426).

The spelling of 113611115 in words is "one hundred thirteen million, six hundred eleven thousand, one hundred fifteen".