113101989 has 32 divisors (see below), whose sum is σ = 202481664. Its totient is φ = 54233280.

The previous prime is 113101979. The next prime is 113101999. The reversal of 113101989 is 989101311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113101979) and next prime (113101999).

It is not a de Polignac number, because 113101989 - 2⁴ = 113101973 is a prime.

It is a super-2 number, since 2×113101989² = 25584119831512242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113101909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15829 + ... + 21834.

It is an arithmetic number, because the mean of its divisors is an integer number (6327552).

Almost surely, 2^113101989 is an apocalyptic number.

It is an amenable number.

113101989 is a deficient number, since it is larger than the sum of its proper divisors (89379675).

113101989 is a wasteful number, since it uses less digits than its factorization.

113101989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37697.

The product of its (nonzero) digits is 1944, while the sum is 33.

The square root of 113101989 is about 10634.9418898271. The cubic root of 113101989 is about 483.6042187702.

The spelling of 113101989 in words is "one hundred thirteen million, one hundred one thousand, nine hundred eighty-nine".