331243201 has 4 divisors (see below), whose sum is σ = 331336404. Its totient is φ = 331150000.

The previous prime is 331243193. The next prime is 331243271. The reversal of 331243201 is 102342133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261954225 + 69288976 = 16185^2 + 8324^2 .

It is a cyclic number.

It is not a de Polignac number, because 331243201 - 2³ = 331243193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331243271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41050 + ... + 48451.

It is an arithmetic number, because the mean of its divisors is an integer number (82834101).

Almost surely, 2^331243201 is an apocalyptic number.

It is an amenable number.

331243201 is a deficient number, since it is larger than the sum of its proper divisors (93203).

331243201 is an equidigital number, since it uses as much as digits as its factorization.

331243201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93202.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 331243201 is about 18200.0879393480. The cubic root of 331243201 is about 691.9090178813.

Adding to 331243201 its reverse (102342133), we get a palindrome (433585334).

The spelling of 331243201 in words is "three hundred thirty-one million, two hundred forty-three thousand, two hundred one".