329213081 has 2 divisors, whose sum is σ = 329213082. Its totient is φ = 329213080.

The previous prime is 329213039. The next prime is 329213111. The reversal of 329213081 is 180312923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 114297481 = 14660^2 + 10691^2 .

It is a cyclic number.

It is not a de Polignac number, because 329213081 - 2¹⁰ = 329212057 is a prime.

It is a super-2 number, since 2×329213081² = 216762505403025122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (329213011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164606540 + 164606541.

It is an arithmetic number, because the mean of its divisors is an integer number (164606541).

Almost surely, 2^329213081 is an apocalyptic number.

It is an amenable number.

329213081 is a deficient number, since it is larger than the sum of its proper divisors (1).

329213081 is an equidigital number, since it uses as much as digits as its factorization.

329213081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 329213081 is about 18144.2299643716. The cubic root of 329213081 is about 690.4925986053.

The spelling of 329213081 in words is "three hundred twenty-nine million, two hundred thirteen thousand, eighty-one".