331303000221 has 12 divisors (see below), whose sum is σ = 490220700060. Its totient is φ = 215481625920.

The previous prime is 331303000213. The next prime is 331303000241. The reversal of 331303000221 is 122000303133.

331303000221 is a `hidden beast` number, since 331 + 30 + 300 + 0 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7137884196 + 324165116025 = 84486^2 + 569355^2 .

It is not a de Polignac number, because 331303000221 - 2³ = 331303000213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331303000194 and 331303000203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331303000201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448919686 + ... + 448920423.

It is an arithmetic number, because the mean of its divisors is an integer number (40851725005).

Almost surely, 2^331303000221 is an apocalyptic number.

It is an amenable number.

331303000221 is a deficient number, since it is larger than the sum of its proper divisors (158917699839).

331303000221 is a wasteful number, since it uses less digits than its factorization.

331303000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897840156 (or 897840153 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 331303000221 its reverse (122000303133), we get a palindrome (453303303354).

The spelling of 331303000221 in words is "three hundred thirty-one billion, three hundred three million, two hundred twenty-one", and thus it is an aban number.