328601231 has 4 divisors (see below), whose sum is σ = 375544272. Its totient is φ = 281658192.

The previous prime is 328601171. The next prime is 328601237. The reversal of 328601231 is 132106823.

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

It is a cyclic number.

It is not a de Polignac number, because 328601231 - 2⁶ = 328601167 is a prime.

It is a super-2 number, since 2×328601231² = 215957538029430722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328601231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328601237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23471510 + ... + 23471523.

It is an arithmetic number, because the mean of its divisors is an integer number (93886068).

Almost surely, 2^328601231 is an apocalyptic number.

328601231 is a deficient number, since it is larger than the sum of its proper divisors (46943041).

328601231 is an equidigital number, since it uses as much as digits as its factorization.

328601231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46943040.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 328601231 is about 18127.3613910023. The cubic root of 328601231 is about 690.0645679268.

The spelling of 328601231 in words is "three hundred twenty-eight million, six hundred one thousand, two hundred thirty-one".