431243297 has 2 divisors, whose sum is σ = 431243298. Its totient is φ = 431243296.

The previous prime is 431243273. The next prime is 431243299. The reversal of 431243297 is 792342134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404452321 + 26790976 = 20111^2 + 5176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431243297 is a prime.

Together with 431243299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (431243299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215621648 + 215621649.

It is an arithmetic number, because the mean of its divisors is an integer number (215621649).

Almost surely, 2^431243297 is an apocalyptic number.

It is an amenable number.

431243297 is a deficient number, since it is larger than the sum of its proper divisors (1).

431243297 is an equidigital number, since it uses as much as digits as its factorization.

431243297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 431243297 is about 20766.3982673934. The cubic root of 431243297 is about 755.5109895482.

The spelling of 431243297 in words is "four hundred thirty-one million, two hundred forty-three thousand, two hundred ninety-seven".