431920327 has 2 divisors, whose sum is σ = 431920328. Its totient is φ = 431920326.

The previous prime is 431920301. The next prime is 431920393. The reversal of 431920327 is 723029134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431920327 - 2¹⁹ = 431396039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431920397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215960163 + 215960164.

It is an arithmetic number, because the mean of its divisors is an integer number (215960164).

Almost surely, 2^431920327 is an apocalyptic number.

431920327 is a deficient number, since it is larger than the sum of its proper divisors (1).

431920327 is an equidigital number, since it uses as much as digits as its factorization.

431920327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 431920327 is about 20782.6929679481. The cubic root of 431920327 is about 755.9061540751.

The spelling of 431920327 in words is "four hundred thirty-one million, nine hundred twenty thousand, three hundred twenty-seven".