431712409 has 2 divisors, whose sum is σ = 431712410. Its totient is φ = 431712408.

The previous prime is 431712397. The next prime is 431712427. The reversal of 431712409 is 904217134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311875600 + 119836809 = 17660^2 + 10947^2 .

It is a cyclic number.

It is not a de Polignac number, because 431712409 - 2⁹ = 431711897 is a prime.

It is not a weakly prime, because it can be changed into another prime (431712469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215856204 + 215856205.

It is an arithmetic number, because the mean of its divisors is an integer number (215856205).

Almost surely, 2^431712409 is an apocalyptic number.

It is an amenable number.

431712409 is a deficient number, since it is larger than the sum of its proper divisors (1).

431712409 is an equidigital number, since it uses as much as digits as its factorization.

431712409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 431712409 is about 20777.6901748005. The cubic root of 431712409 is about 755.7848417932.

The spelling of 431712409 in words is "four hundred thirty-one million, seven hundred twelve thousand, four hundred nine".