252431243 has 4 divisors (see below), whose sum is σ = 252584160. Its totient is φ = 252278328.

The previous prime is 252431227. The next prime is 252431251. The reversal of 252431243 is 342134252.

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 252431243 - 2⁴ = 252431227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252431203) 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, 73955 + ... + 77292.

It is an arithmetic number, because the mean of its divisors is an integer number (63146040).

Almost surely, 2^252431243 is an apocalyptic number.

252431243 is a deficient number, since it is larger than the sum of its proper divisors (152917).

252431243 is a wasteful number, since it uses less digits than its factorization.

252431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152916.

The product of its digits is 5760, while the sum is 26.

The square root of 252431243 is about 15888.0849380912. The cubic root of 252431243 is about 631.9960567972.

Adding to 252431243 its reverse (342134252), we get a palindrome (594565495).

The spelling of 252431243 in words is "two hundred fifty-two million, four hundred thirty-one thousand, two hundred forty-three".