331220341 has 2 divisors, whose sum is σ = 331220342. Its totient is φ = 331220340.

The previous prime is 331220311. The next prime is 331220363. The reversal of 331220341 is 143022133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305515441 + 25704900 = 17479^2 + 5070^2 .

It is a cyclic number.

It is not a de Polignac number, because 331220341 - 2¹⁵ = 331187573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331220311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165610170 + 165610171.

It is an arithmetic number, because the mean of its divisors is an integer number (165610171).

Almost surely, 2^331220341 is an apocalyptic number.

It is an amenable number.

331220341 is a deficient number, since it is larger than the sum of its proper divisors (1).

331220341 is an equidigital number, since it uses as much as digits as its factorization.

331220341 is an evil number, because the sum of its binary digits is even.

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

The square root of 331220341 is about 18199.4599095687. The cubic root of 331220341 is about 691.8931006701.

Adding to 331220341 its reverse (143022133), we get a palindrome (474242474).

It can be divided in two parts, 3312 and 20341, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 331220341 in words is "three hundred thirty-one million, two hundred twenty thousand, three hundred forty-one".