431867 has 2 divisors, whose sum is σ = 431868. Its totient is φ = 431866.

The previous prime is 431863. The next prime is 431869. The reversal of 431867 is 768134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431867 - 2² = 431863 is a prime.

Together with 431869, 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 (431863) 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, 215933 + 215934.

It is an arithmetic number, because the mean of its divisors is an integer number (215934).

2⁴³¹⁸⁶⁷ is an apocalyptic number.

431867 is a deficient number, since it is larger than the sum of its proper divisors (1).

431867 is an equidigital number, since it uses as much as digits as its factorization.

431867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 431867 is about 657.1658846897. The cubic root of 431867 is about 75.5875043502.

The spelling of 431867 in words is "four hundred thirty-one thousand, eight hundred sixty-seven".