23210109 has 12 divisors (see below), whose sum is σ = 36104796. Its totient is φ = 14283072.

The previous prime is 23210101. The next prime is 23210111. The reversal of 23210109 is 90101232.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 11799225 = 3378^2 + 3435^2 .

It is not a de Polignac number, because 23210109 - 2³ = 23210101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23210091 and 23210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99072 + ... + 99305.

It is an arithmetic number, because the mean of its divisors is an integer number (3008733).

Almost surely, 2^23210109 is an apocalyptic number.

It is an amenable number.

23210109 is a deficient number, since it is larger than the sum of its proper divisors (12894687).

23210109 is a wasteful number, since it uses less digits than its factorization.

23210109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198396 (or 198393 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 23210109 is about 4817.6871006739. The cubic root of 23210109 is about 285.2500483275.

The spelling of 23210109 in words is "twenty-three million, two hundred ten thousand, one hundred nine".