328523909 has 8 divisors (see below), whose sum is σ = 375875328. Its totient is φ = 281277360.

The previous prime is 328523893. The next prime is 328523911. The reversal of 328523909 is 909325823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328523909 - 2⁴ = 328523893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328523969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19382 + ... + 32135.

It is an arithmetic number, because the mean of its divisors is an integer number (46984416).

Almost surely, 2^328523909 is an apocalyptic number.

It is an amenable number.

328523909 is a deficient number, since it is larger than the sum of its proper divisors (47351419).

328523909 is an equidigital number, since it uses as much as digits as its factorization.

328523909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52435.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 328523909 is about 18125.2285226973. The cubic root of 328523909 is about 690.0104381254.

The spelling of 328523909 in words is "three hundred twenty-eight million, five hundred twenty-three thousand, nine hundred nine".