1113312215 has 4 divisors (see below), whose sum is σ = 1335974664. Its totient is φ = 890649768.

The previous prime is 1113312199. The next prime is 1113312229. The reversal of 1113312215 is 5122133111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5122133111 = 73 ⋅70166207.

It is a cyclic number.

It is not a de Polignac number, because 1113312215 - 2⁴ = 1113312199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111331217 + ... + 111331226.

It is an arithmetic number, because the mean of its divisors is an integer number (333993666).

Almost surely, 2^1113312215 is an apocalyptic number.

1113312215 is a deficient number, since it is larger than the sum of its proper divisors (222662449).

1113312215 is an equidigital number, since it uses as much as digits as its factorization.

1113312215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222662448.

The product of its digits is 180, while the sum is 20.

The square root of 1113312215 is about 33366.3335564458. Note that the first 3 decimals coincide. The cubic root of 1113312215 is about 1036.4276516799.

Adding to 1113312215 its reverse (5122133111), we get a palindrome (6235445326).

The spelling of 1113312215 in words is "one billion, one hundred thirteen million, three hundred twelve thousand, two hundred fifteen".