328339731 has 8 divisors (see below), whose sum is σ = 444320704. Its totient is φ = 215625960.

The previous prime is 328339727. The next prime is 328339763. The reversal of 328339731 is 137933823.

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

It is not a de Polignac number, because 328339731 - 2² = 328339727 is a prime.

It is a super-2 number, since 2×328339731² = 215613957906304722, 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 328339731.

It is not an unprimeable number, because it can be changed into a prime (328339771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816565 + ... + 816966.

It is an arithmetic number, because the mean of its divisors is an integer number (55540088).

Almost surely, 2^328339731 is an apocalyptic number.

328339731 is a deficient number, since it is larger than the sum of its proper divisors (115980973).

328339731 is a wasteful number, since it uses less digits than its factorization.

328339731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633601.

The product of its digits is 81648, while the sum is 39.

The square root of 328339731 is about 18120.1471020519. The cubic root of 328339731 is about 689.8814688223.

The spelling of 328339731 in words is "three hundred twenty-eight million, three hundred thirty-nine thousand, seven hundred thirty-one".