331321002 has 8 divisors (see below), whose sum is σ = 662642016. Its totient is φ = 110440332.

The previous prime is 331320989. The next prime is 331321009. The reversal of 331321002 is 200123133.

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

331321002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (331321009) 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, 27610078 + ... + 27610089.

It is an arithmetic number, because the mean of its divisors is an integer number (82830252).

Almost surely, 2^331321002 is an apocalyptic number.

331321002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331321002 is a wasteful number, since it uses less digits than its factorization.

331321002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55220172.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 331321002 is about 18202.2251936405. The cubic root of 331321002 is about 691.9631845272.

Adding to 331321002 its reverse (200123133), we get a palindrome (531444135).

The spelling of 331321002 in words is "three hundred thirty-one million, three hundred twenty-one thousand, two".