331021323253 has 2 divisors, whose sum is σ = 331021323254. Its totient is φ = 331021323252.

The previous prime is 331021323211. The next prime is 331021323263. The reversal of 331021323253 is 352323120133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242459729604 + 88561593649 = 492402^2 + 297593^2 .

It is an emirp because it is prime and its reverse (352323120133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331021323253 - 2²⁵ = 330987768821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331021323263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165510661626 + 165510661627.

It is an arithmetic number, because the mean of its divisors is an integer number (165510661627).

Almost surely, 2^331021323253 is an apocalyptic number.

It is an amenable number.

331021323253 is a deficient number, since it is larger than the sum of its proper divisors (1).

331021323253 is an equidigital number, since it uses as much as digits as its factorization.

331021323253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 331021323253 its reverse (352323120133), we get a palindrome (683344443386).

The spelling of 331021323253 in words is "three hundred thirty-one billion, twenty-one million, three hundred twenty-three thousand, two hundred fifty-three".