113102989 has 4 divisors (see below), whose sum is σ = 119756124. Its totient is φ = 106449856.

The previous prime is 113102971. The next prime is 113103013. The reversal of 113102989 is 989201311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989201311 = 7 ⋅141314473.

It can be written as a sum of positive squares in 2 ways, for example, as 32012964 + 81090025 = 5658^2 + 9005^2 .

It is a cyclic number.

It is not a de Polignac number, because 113102989 - 2⁷ = 113102861 is a prime.

It is a super-2 number, since 2×113102989² = 25584572241468242, 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 (113102089) 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, 3326542 + ... + 3326575.

It is an arithmetic number, because the mean of its divisors is an integer number (29939031).

Almost surely, 2^113102989 is an apocalyptic number.

It is an amenable number.

113102989 is a deficient number, since it is larger than the sum of its proper divisors (6653135).

113102989 is an equidigital number, since it uses as much as digits as its factorization.

113102989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653134.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 113102989 is about 10634.9889045546. The cubic root of 113102989 is about 483.6056440407.

The spelling of 113102989 in words is "one hundred thirteen million, one hundred two thousand, nine hundred eighty-nine".