431252539 has 2 divisors, whose sum is σ = 431252540. Its totient is φ = 431252538.

The previous prime is 431252491. The next prime is 431252567. The reversal of 431252539 is 935252134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431252539 - 2⁷ = 431252411 is a prime.

It is not a weakly prime, because it can be changed into another prime (431252579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215626269 + 215626270.

It is an arithmetic number, because the mean of its divisors is an integer number (215626270).

Almost surely, 2^431252539 is an apocalyptic number.

431252539 is a deficient number, since it is larger than the sum of its proper divisors (1).

431252539 is an equidigital number, since it uses as much as digits as its factorization.

431252539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 431252539 is about 20766.6207891414. The cubic root of 431252539 is about 755.5163866429.

The spelling of 431252539 in words is "four hundred thirty-one million, two hundred fifty-two thousand, five hundred thirty-nine".