431120399 has 2 divisors, whose sum is σ = 431120400. Its totient is φ = 431120398.

The previous prime is 431120387. The next prime is 431120429. The reversal of 431120399 is 993021134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431120399 - 2¹⁶ = 431054863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431120369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215560199 + 215560200.

It is an arithmetic number, because the mean of its divisors is an integer number (215560200).

Almost surely, 2^431120399 is an apocalyptic number.

431120399 is a deficient number, since it is larger than the sum of its proper divisors (1).

431120399 is an equidigital number, since it uses as much as digits as its factorization.

431120399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 431120399 is about 20763.4389974301. The cubic root of 431120399 is about 755.4392128876.

The spelling of 431120399 in words is "four hundred thirty-one million, one hundred twenty thousand, three hundred ninety-nine".