328075531 has 6 divisors (see below), whose sum is σ = 381638940. Its totient is φ = 281207556.

The previous prime is 328075529. The next prime is 328075547. The reversal of 328075531 is 135570823.

It is not a de Polignac number, because 328075531 - 2¹ = 328075529 is a prime.

It is a super-2 number, since 2×328075531² = 215267108081863922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328075591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3347661 + ... + 3347758.

It is an arithmetic number, because the mean of its divisors is an integer number (63606490).

Almost surely, 2^328075531 is an apocalyptic number.

328075531 is a deficient number, since it is larger than the sum of its proper divisors (53563409).

328075531 is an equidigital number, since it uses as much as digits as its factorization.

328075531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695433 (or 6695426 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 328075531 is about 18112.8554071411. The cubic root of 328075531 is about 689.6963804561.

The spelling of 328075531 in words is "three hundred twenty-eight million, seventy-five thousand, five hundred thirty-one".