113171285 has 4 divisors (see below), whose sum is σ = 135805548. Its totient is φ = 90537024.

The previous prime is 113171281. The next prime is 113171291. The reversal of 113171285 is 582171311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582171311 = 14957 ⋅38923.

It can be written as a sum of positive squares in 2 ways, for example, as 54081316 + 59089969 = 7354^2 + 7687^2 .

It is a cyclic number.

It is not a de Polignac number, because 113171285 - 2² = 113171281 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 (113171281) 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, 11317124 + ... + 11317133.

It is an arithmetic number, because the mean of its divisors is an integer number (33951387).

Almost surely, 2^113171285 is an apocalyptic number.

It is an amenable number.

113171285 is a deficient number, since it is larger than the sum of its proper divisors (22634263).

113171285 is an equidigital number, since it uses as much as digits as its factorization.

113171285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22634262.

The product of its digits is 1680, while the sum is 29.

The square root of 113171285 is about 10638.1993307138. The cubic root of 113171285 is about 483.7029644436.

The spelling of 113171285 in words is "one hundred thirteen million, one hundred seventy-one thousand, two hundred eighty-five".