331539028 has 12 divisors (see below), whose sum is σ = 582245440. Its totient is φ = 165183192.

The previous prime is 331538993. The next prime is 331539029. The reversal of 331539028 is 820935133.

It is a junction number, because it is equal to n+sod(n) for n = 331538984 and 331539002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331539029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145308 + ... + 147571.

Almost surely, 2^331539028 is an apocalyptic number.

It is an amenable number.

331539028 is a deficient number, since it is larger than the sum of its proper divisors (250706412).

331539028 is a wasteful number, since it uses less digits than its factorization.

331539028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293166 (or 293164 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 331539028 is about 18208.2132017395. The cubic root of 331539028 is about 692.1149335198.

The spelling of 331539028 in words is "three hundred thirty-one million, five hundred thirty-nine thousand, twenty-eight".