431243039 has 2 divisors, whose sum is σ = 431243040. Its totient is φ = 431243038.

The previous prime is 431243011. The next prime is 431243051. The reversal of 431243039 is 930342134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431243039 - 2⁸ = 431242783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431243009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215621519 + 215621520.

It is an arithmetic number, because the mean of its divisors is an integer number (215621520).

Almost surely, 2^431243039 is an apocalyptic number.

431243039 is a deficient number, since it is larger than the sum of its proper divisors (1).

431243039 is an equidigital number, since it uses as much as digits as its factorization.

431243039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 431243039 is about 20766.3920554342. The cubic root of 431243039 is about 755.5108388816.

The spelling of 431243039 in words is "four hundred thirty-one million, two hundred forty-three thousand, thirty-nine".