252431123 has 4 divisors (see below), whose sum is σ = 288492720. Its totient is φ = 216369528.

The previous prime is 252431099. The next prime is 252431129. The reversal of 252431123 is 321134252.

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 252431123 - 2⁶ = 252431059 is a prime.

It is a super-2 number, since 2×252431123² = 127442943718082258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252431129) 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, 18030788 + ... + 18030801.

It is an arithmetic number, because the mean of its divisors is an integer number (72123180).

Almost surely, 2^252431123 is an apocalyptic number.

252431123 is a deficient number, since it is larger than the sum of its proper divisors (36061597).

252431123 is an equidigital number, since it uses as much as digits as its factorization.

252431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36061596.

The product of its digits is 1440, while the sum is 23.

The square root of 252431123 is about 15888.0811616759. The cubic root of 252431123 is about 631.9959566517.

Adding to 252431123 its reverse (321134252), we get a palindrome (573565375).

The spelling of 252431123 in words is "two hundred fifty-two million, four hundred thirty-one thousand, one hundred twenty-three".