331300221 has 24 divisors (see below), whose sum is σ = 518865984. Its totient is φ = 187467840.

The previous prime is 331300157. The next prime is 331300223. The reversal of 331300221 is 122003133.

It is not a de Polignac number, because 331300221 - 2⁶ = 331300157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 331300221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331300223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4201 + ... + 26081.

It is an arithmetic number, because the mean of its divisors is an integer number (21619416).

Almost surely, 2^331300221 is an apocalyptic number.

It is an amenable number.

331300221 is a deficient number, since it is larger than the sum of its proper divisors (187565763).

331300221 is a wasteful number, since it uses less digits than its factorization.

331300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22001 (or 21994 counting only the distinct ones).

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

The square root of 331300221 is about 18201.6543478883. The cubic root of 331300221 is about 691.9487172004.

Adding to 331300221 its reverse (122003133), we get a palindrome (453303354).

The spelling of 331300221 in words is "three hundred thirty-one million, three hundred thousand, two hundred twenty-one".