431659 has 2 divisors, whose sum is σ = 431660. Its totient is φ = 431658.

The previous prime is 431657. The next prime is 431663. The reversal of 431659 is 956134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431659 - 2¹ = 431657 is a prime.

Together with 431657, it forms a pair of twin primes.

It is equal to p₃₆₂₈₉ and since 431659 and 36289 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (431657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215829 + 215830.

It is an arithmetic number, because the mean of its divisors is an integer number (215830).

2⁴³¹⁶⁵⁹ is an apocalyptic number.

431659 is a deficient number, since it is larger than the sum of its proper divisors (1).

431659 is an equidigital number, since it uses as much as digits as its factorization.

431659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 431659 is about 657.0076103060. The cubic root of 431659 is about 75.5753673376.

The spelling of 431659 in words is "four hundred thirty-one thousand, six hundred fifty-nine".