23961129 has 4 divisors (see below), whose sum is σ = 31948176. Its totient is φ = 15974084.

The previous prime is 23961121. The next prime is 23961149. The reversal of 23961129 is 92116932.

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 23961129 - 2³ = 23961121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23961129.

It is not an unprimeable number, because it can be changed into a prime (23961121) 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, 3993519 + ... + 3993524.

It is an arithmetic number, because the mean of its divisors is an integer number (7987044).

Almost surely, 2^23961129 is an apocalyptic number.

It is an amenable number.

23961129 is a deficient number, since it is larger than the sum of its proper divisors (7987047).

23961129 is an equidigital number, since it uses as much as digits as its factorization.

23961129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987046.

The product of its digits is 5832, while the sum is 33.

The square root of 23961129 is about 4895.0106230733. The cubic root of 23961129 is about 288.2941030153.

It can be divided in two parts, 23961 and 129, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23961129 in words is "twenty-three million, nine hundred sixty-one thousand, one hundred twenty-nine".