113138985 has 8 divisors (see below), whose sum is σ = 181022400. Its totient is φ = 60340784.

The previous prime is 113138983. The next prime is 113138989. The reversal of 113138985 is 589831311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113138985 - 2¹ = 113138983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113138983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3771285 + ... + 3771314.

It is an arithmetic number, because the mean of its divisors is an integer number (22627800).

Almost surely, 2^113138985 is an apocalyptic number.

113138985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113138985 is a deficient number, since it is larger than the sum of its proper divisors (67883415).

113138985 is an equidigital number, since it uses as much as digits as its factorization.

113138985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542607.

The product of its digits is 25920, while the sum is 39.

The square root of 113138985 is about 10636.6811083157. The cubic root of 113138985 is about 483.6569424856.

The spelling of 113138985 in words is "one hundred thirteen million, one hundred thirty-eight thousand, nine hundred eighty-five".