113215505 has 16 divisors (see below), whose sum is σ = 146558160. Its totient is φ = 83463168.

The previous prime is 113215483. The next prime is 113215561. The reversal of 113215505 is 505512311.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10233601 + 102981904 = 3199^2 + 10148^2 .

It is a cyclic number.

It is not a de Polignac number, because 113215505 - 2²⁴ = 96438289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51509 + ... + 53661.

It is an arithmetic number, because the mean of its divisors is an integer number (9159885).

Almost surely, 2^113215505 is an apocalyptic number.

It is an amenable number.

113215505 is a deficient number, since it is larger than the sum of its proper divisors (33342655).

113215505 is a wasteful number, since it uses less digits than its factorization.

113215505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 113215505 is about 10640.2774869831. The cubic root of 113215505 is about 483.7659561581.

Adding to 113215505 its reverse (505512311), we get a palindrome (618727816).

The spelling of 113215505 in words is "one hundred thirteen million, two hundred fifteen thousand, five hundred five".