329431 has 2 divisors, whose sum is σ = 329432. Its totient is φ = 329430.

The previous prime is 329419. The next prime is 329471. The reversal of 329431 is 134923.

It is a weak prime.

It is an emirp because it is prime and its reverse (134923) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 329431 - 2⁹ = 328919 is a prime.

It is a super-2 number, since 2×329431² = 217049567522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (329401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164715 + 164716.

It is an arithmetic number, because the mean of its divisors is an integer number (164716).

2³²⁹⁴³¹ is an apocalyptic number.

329431 is a deficient number, since it is larger than the sum of its proper divisors (1).

329431 is an equidigital number, since it uses as much as digits as its factorization.

329431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 329431 is about 573.9608000552. The cubic root of 329431 is about 69.0644919677.

The spelling of 329431 in words is "three hundred twenty-nine thousand, four hundred thirty-one".