231423 has 4 divisors (see below), whose sum is σ = 308568. Its totient is φ = 154280.

The previous prime is 231419. The next prime is 231431. The reversal of 231423 is 324132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231423 - 2² = 231419 is a prime.

It is a D-number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231433) 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, 38568 + ... + 38573.

It is an arithmetic number, because the mean of its divisors is an integer number (77142).

2²³¹⁴²³ is an apocalyptic number.

231423 is a deficient number, since it is larger than the sum of its proper divisors (77145).

231423 is an equidigital number, since it uses as much as digits as its factorization.

231423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77144.

The product of its digits is 144, while the sum is 15.

The square root of 231423 is about 481.0644447473. The cubic root of 231423 is about 61.3953537990.

Adding to 231423 its reverse (324132), we get a palindrome (555555).

The spelling of 231423 in words is "two hundred thirty-one thousand, four hundred twenty-three".