331220241 has 12 divisors (see below), whose sum is σ = 521922960. Its totient is φ = 200739480.

The previous prime is 331220209. The next prime is 331220243. The reversal of 331220241 is 142022133.

It is not a de Polignac number, because 331220241 - 2⁵ = 331220209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331220243) 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 11 ways as a sum of consecutive naturals, for example, 1672731 + ... + 1672928.

It is an arithmetic number, because the mean of its divisors is an integer number (43493580).

Almost surely, 2^331220241 is an apocalyptic number.

It is an amenable number.

331220241 is a deficient number, since it is larger than the sum of its proper divisors (190702719).

331220241 is a wasteful number, since it uses less digits than its factorization.

331220241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345676 (or 3345673 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 331220241 is about 18199.4571622343. The cubic root of 331220241 is about 691.8930310394.

Adding to 331220241 its reverse (142022133), we get a palindrome (473242374).

The spelling of 331220241 in words is "three hundred thirty-one million, two hundred twenty thousand, two hundred forty-one".