23129153 has 4 divisors (see below), whose sum is σ = 23926740. Its totient is φ = 22331568.

The previous prime is 23129111. The next prime is 23129159. The reversal of 23129153 is 35192132.

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 12837889 + 10291264 = 3583^2 + 3208^2 .

It is a cyclic number.

It is not a de Polignac number, because 23129153 - 2¹⁰ = 23128129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23129159) 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, 398750 + ... + 398807.

It is an arithmetic number, because the mean of its divisors is an integer number (5981685).

Almost surely, 2^23129153 is an apocalyptic number.

It is an amenable number.

23129153 is a deficient number, since it is larger than the sum of its proper divisors (797587).

23129153 is an equidigital number, since it uses as much as digits as its factorization.

23129153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797586.

The product of its digits is 1620, while the sum is 26.

The square root of 23129153 is about 4809.2778044110. The cubic root of 23129153 is about 284.9180147886.

The spelling of 23129153 in words is "twenty-three million, one hundred twenty-nine thousand, one hundred fifty-three".