331310021002 has 8 divisors (see below), whose sum is σ = 496967924196. Its totient is φ = 165654046272.

The previous prime is 331310020973. The next prime is 331310021011. The reversal of 331310021002 is 200120013133.

It can be written as a sum of positive squares in 2 ways, for example, as 299831809761 + 31478211241 = 547569^2 + 177421^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77128 + ... + 817660.

Almost surely, 2^331310021002 is an apocalyptic number.

331310021002 is a deficient number, since it is larger than the sum of its proper divisors (165657903194).

331310021002 is a wasteful number, since it uses less digits than its factorization.

331310021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964232.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 331310021002 its reverse (200120013133), we get a palindrome (531430034135).

The spelling of 331310021002 in words is "three hundred thirty-one billion, three hundred ten million, twenty-one thousand, two".