331428539 has 8 divisors (see below), whose sum is σ = 357192192. Its totient is φ = 305703360.

The previous prime is 331428527. The next prime is 331428553. The reversal of 331428539 is 935824133.

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

It is a cyclic number.

It is not a de Polignac number, because 331428539 - 2⁸ = 331428283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331428509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9734 + ... + 27524.

It is an arithmetic number, because the mean of its divisors is an integer number (44649024).

Almost surely, 2^331428539 is an apocalyptic number.

331428539 is a deficient number, since it is larger than the sum of its proper divisors (25763653).

331428539 is a wasteful number, since it uses less digits than its factorization.

331428539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19237.

The product of its digits is 77760, while the sum is 38.

The square root of 331428539 is about 18205.1789060146. The cubic root of 331428539 is about 692.0380400252.

The spelling of 331428539 in words is "three hundred thirty-one million, four hundred twenty-eight thousand, five hundred thirty-nine".