328473251 has 4 divisors (see below), whose sum is σ = 328574400. Its totient is φ = 328372104.

The previous prime is 328473239. The next prime is 328473253. The reversal of 328473251 is 152374823.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328473251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328473253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45536 + ... + 52253.

It is an arithmetic number, because the mean of its divisors is an integer number (82143600).

Almost surely, 2^328473251 is an apocalyptic number.

328473251 is a deficient number, since it is larger than the sum of its proper divisors (101149).

328473251 is an equidigital number, since it uses as much as digits as its factorization.

328473251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101148.

The product of its digits is 40320, while the sum is 35.

The square root of 328473251 is about 18123.8310243723. The cubic root of 328473251 is about 689.9749700365.

The spelling of 328473251 in words is "three hundred twenty-eight million, four hundred seventy-three thousand, two hundred fifty-one".