328032091 has 2 divisors, whose sum is σ = 328032092. Its totient is φ = 328032090.

The previous prime is 328032083. The next prime is 328032097. The reversal of 328032091 is 190230823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328032091 - 2³ = 328032083 is a prime.

It is not a weakly prime, because it can be changed into another prime (328032097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164016045 + 164016046.

It is an arithmetic number, because the mean of its divisors is an integer number (164016046).

Almost surely, 2^328032091 is an apocalyptic number.

328032091 is a deficient number, since it is larger than the sum of its proper divisors (1).

328032091 is an equidigital number, since it uses as much as digits as its factorization.

328032091 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 28.

The square root of 328032091 is about 18111.6562191314. The cubic root of 328032091 is about 689.6659385503.

The spelling of 328032091 in words is "three hundred twenty-eight million, thirty-two thousand, ninety-one".