23231429 has 4 divisors (see below), whose sum is σ = 25018476. Its totient is φ = 21444384.

The previous prime is 23231399. The next prime is 23231473. The reversal of 23231429 is 92413232.

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 4972900 + 18258529 = 2230^2 + 4273^2 .

It is not a de Polignac number, because 23231429 - 2²⁴ = 6454213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23231398 and 23231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231479) 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, 893504 + ... + 893529.

It is an arithmetic number, because the mean of its divisors is an integer number (6254619).

Almost surely, 2^23231429 is an apocalyptic number.

It is an amenable number.

23231429 is a deficient number, since it is larger than the sum of its proper divisors (1787047).

23231429 is a wasteful number, since it uses less digits than its factorization.

23231429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787046.

The product of its digits is 2592, while the sum is 26.

The square root of 23231429 is about 4819.8992728064. The cubic root of 23231429 is about 285.3373618610.

The spelling of 23231429 in words is "twenty-three million, two hundred thirty-one thousand, four hundred twenty-nine".