23170129 has 4 divisors (see below), whose sum is σ = 23224320. Its totient is φ = 23115940.

The previous prime is 23170109. The next prime is 23170151. The reversal of 23170129 is 92107132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23170129 - 2⁵ = 23170097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23170109) 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, 26449 + ... + 27310.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^23170129 is an apocalyptic number.

It is an amenable number.

23170129 is a deficient number, since it is larger than the sum of its proper divisors (54191).

23170129 is an equidigital number, since it uses as much as digits as its factorization.

23170129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54190.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 23170129 is about 4813.5360183549. The cubic root of 23170129 is about 285.0861707219.

The spelling of 23170129 in words is "twenty-three million, one hundred seventy thousand, one hundred twenty-nine".