23315429 has 4 divisors (see below), whose sum is σ = 23884140. Its totient is φ = 22746720.

The previous prime is 23315387. The next prime is 23315459. The reversal of 23315429 is 92451332.

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 9424900 + 13890529 = 3070^2 + 3727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23315429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23315459) 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, 284294 + ... + 284375.

It is an arithmetic number, because the mean of its divisors is an integer number (5971035).

Almost surely, 2^23315429 is an apocalyptic number.

It is an amenable number.

23315429 is a deficient number, since it is larger than the sum of its proper divisors (568711).

23315429 is an equidigital number, since it uses as much as digits as its factorization.

23315429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568710.

The product of its digits is 6480, while the sum is 29.

The square root of 23315429 is about 4828.6052851729. The cubic root of 23315429 is about 285.6808549814.

The spelling of 23315429 in words is "twenty-three million, three hundred fifteen thousand, four hundred twenty-nine".