23231489 has 4 divisors (see below), whose sum is σ = 23725824. Its totient is φ = 22737156.

The previous prime is 23231479. The next prime is 23231491. The reversal of 23231489 is 98413232.

It is a happy number.

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 23231489 - 2⁴ = 23231473 is a prime.

It is a Duffinian number.

It is a Curzon 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, 247097 + ... + 247190.

It is an arithmetic number, because the mean of its divisors is an integer number (5931456).

Almost surely, 2^23231489 is an apocalyptic number.

It is an amenable number.

23231489 is a deficient number, since it is larger than the sum of its proper divisors (494335).

23231489 is an equidigital number, since it uses as much as digits as its factorization.

23231489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494334.

The product of its digits is 10368, while the sum is 32.

The square root of 23231489 is about 4819.9054969989. The cubic root of 23231489 is about 285.3376075084.

The spelling of 23231489 in words is "twenty-three million, two hundred thirty-one thousand, four hundred eighty-nine".