331812241 has 8 divisors (see below), whose sum is σ = 335393960. Its totient is φ = 328240512.

The previous prime is 331812233. The next prime is 331812253. The reversal of 331812241 is 142218133.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69372241 + 262440000 = 8329^2 + 16200^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 331812241 - 2³ = 331812233 is a prime.

It is a super-2 number, since 2×331812241² = 220198726554884162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331812541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77821 + ... + 81973.

It is an arithmetic number, because the mean of its divisors is an integer number (41924245).

Almost surely, 2^331812241 is an apocalyptic number.

It is an amenable number.

331812241 is a deficient number, since it is larger than the sum of its proper divisors (3581719).

331812241 is a wasteful number, since it uses less digits than its factorization.

331812241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995.

The product of its digits is 1152, while the sum is 25.

The square root of 331812241 is about 18215.7141227019. The cubic root of 331812241 is about 692.3049995074.

The spelling of 331812241 in words is "three hundred thirty-one million, eight hundred twelve thousand, two hundred forty-one".