23103989 has 4 divisors (see below), whose sum is σ = 23420556. Its totient is φ = 22787424.

The previous prime is 23103973. The next prime is 23103991. The reversal of 23103989 is 98930132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4656964 + 18447025 = 2158^2 + 4295^2 .

It is a cyclic number.

It is not a de Polignac number, because 23103989 - 2⁴ = 23103973 is a prime.

It is a super-3 number, since 3×23103989³ (a number of 23 digits) contains 333 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 (23103089) 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, 158174 + ... + 158319.

It is an arithmetic number, because the mean of its divisors is an integer number (5855139).

Almost surely, 2^23103989 is an apocalyptic number.

It is an amenable number.

23103989 is a deficient number, since it is larger than the sum of its proper divisors (316567).

23103989 is an equidigital number, since it uses as much as digits as its factorization.

23103989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316566.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 23103989 is about 4806.6608992106. The cubic root of 23103989 is about 284.8146491552.

The spelling of 23103989 in words is "twenty-three million, one hundred three thousand, nine hundred eighty-nine".