331201130321 has 2 divisors, whose sum is σ = 331201130322. Its totient is φ = 331201130320.

The previous prime is 331201130291. The next prime is 331201130329. The reversal of 331201130321 is 123031102133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331158815296 + 42315025 = 575464^2 + 6505^2 .

It is an emirp because it is prime and its reverse (123031102133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331201130321 - 2⁶ = 331201130257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331201130293 and 331201130302.

It is not a weakly prime, because it can be changed into another prime (331201130329) 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 as a sum of consecutive naturals, namely, 165600565160 + 165600565161.

It is an arithmetic number, because the mean of its divisors is an integer number (165600565161).

Almost surely, 2^331201130321 is an apocalyptic number.

It is an amenable number.

331201130321 is a deficient number, since it is larger than the sum of its proper divisors (1).

331201130321 is an equidigital number, since it uses as much as digits as its factorization.

331201130321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 331201130321 its reverse (123031102133), we get a palindrome (454232232454).

The spelling of 331201130321 in words is "three hundred thirty-one billion, two hundred one million, one hundred thirty thousand, three hundred twenty-one".