252431 has 2 divisors, whose sum is σ = 252432. Its totient is φ = 252430.

The previous prime is 252419. The next prime is 252443. The reversal of 252431 is 134252.

It is a balanced prime because it is at equal distance from previous prime (252419) and next prime (252443).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252431 is a prime.

It is a super-2 number, since 2×252431² = 127442819522, which contains 22 as substring.

It is equal to p₂₂₂₃₈ and since 252431 and 22238 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126215 + 126216.

It is an arithmetic number, because the mean of its divisors is an integer number (126216).

2²⁵²⁴³¹ is an apocalyptic number.

252431 is a deficient number, since it is larger than the sum of its proper divisors (1).

252431 is an equidigital number, since it uses as much as digits as its factorization.

252431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 17.

The square root of 252431 is about 502.4251187988. The cubic root of 252431 is about 63.1995854003.

Adding to 252431 its reverse (134252), we get a palindrome (386683).

The spelling of 252431 in words is "two hundred fifty-two thousand, four hundred thirty-one".