328027531 has 4 divisors (see below), whose sum is σ = 353260432. Its totient is φ = 302794632.

The previous prime is 328027517. The next prime is 328027559. The reversal of 328027531 is 135720823.

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-328027531 is a prime.

It is a super-2 number, since 2×328027531² = 215204122187911922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328027493 and 328027502.

It is not an unprimeable number, because it can be changed into a prime (328027501) 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, 12616431 + ... + 12616456.

It is an arithmetic number, because the mean of its divisors is an integer number (88315108).

Almost surely, 2^328027531 is an apocalyptic number.

328027531 is a deficient number, since it is larger than the sum of its proper divisors (25232901).

328027531 is a wasteful number, since it uses less digits than its factorization.

328027531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25232900.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 328027531 is about 18111.5303329122. The cubic root of 328027531 is about 689.6627428353.

The spelling of 328027531 in words is "three hundred twenty-eight million, twenty-seven thousand, five hundred thirty-one".