113659981 has 8 divisors (see below), whose sum is σ = 117469184. Its totient is φ = 109859760.

The previous prime is 113659979. The next prime is 113659991. The reversal of 113659981 is 189956311.

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 113659981 - 2¹ = 113659979 is a prime.

It is a super-2 number, since 2×113659981² = 25837182561840722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113659991) 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, 32011 + ... + 35383.

It is an arithmetic number, because the mean of its divisors is an integer number (14683648).

Almost surely, 2^113659981 is an apocalyptic number.

It is an amenable number.

113659981 is a deficient number, since it is larger than the sum of its proper divisors (3809203).

113659981 is a wasteful number, since it uses less digits than its factorization.

113659981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491.

The product of its digits is 58320, while the sum is 43.

The square root of 113659981 is about 10661.1435127757. The cubic root of 113659981 is about 484.3982063720.

The spelling of 113659981 in words is "one hundred thirteen million, six hundred fifty-nine thousand, nine hundred eighty-one".