331344223430021 has 2 divisors, whose sum is σ = 331344223430022. Its totient is φ = 331344223430020.

The previous prime is 331344223429987. The next prime is 331344223430177. The reversal of 331344223430021 is 120034322443133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224988420148996 + 106355803281025 = 14999614^2 + 10312895^2 .

It is a cyclic number.

It is not a de Polignac number, because 331344223430021 - 2³⁰ = 331343149688197 is a prime.

It is a super-3 number, since 3×331344223430021³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331344223430621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165672111715010 + 165672111715011.

It is an arithmetic number, because the mean of its divisors is an integer number (165672111715011).

Almost surely, 2^{331344223430021} is an apocalyptic number.

It is an amenable number.

331344223430021 is a deficient number, since it is larger than the sum of its proper divisors (1).

331344223430021 is an equidigital number, since it uses as much as digits as its factorization.

331344223430021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 331344223430021 its reverse (120034322443133), we get a palindrome (451378545873154).

The spelling of 331344223430021 in words is "three hundred thirty-one trillion, three hundred forty-four billion, two hundred twenty-three million, four hundred thirty thousand, twenty-one".