331425031321 has 2 divisors, whose sum is σ = 331425031322. Its totient is φ = 331425031320.

The previous prime is 331425031297. The next prime is 331425031337. The reversal of 331425031321 is 123130524133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247069637721 + 84355393600 = 497061^2 + 290440^2 .

It is a cyclic number.

It is not a de Polignac number, because 331425031321 - 2⁷ = 331425031193 is a prime.

It is a super-2 number, since 2×331425031321² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331425031321.

It is not a weakly prime, because it can be changed into another prime (331425031351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165712515660 + 165712515661.

It is an arithmetic number, because the mean of its divisors is an integer number (165712515661).

Almost surely, 2^331425031321 is an apocalyptic number.

It is an amenable number.

331425031321 is a deficient number, since it is larger than the sum of its proper divisors (1).

331425031321 is an equidigital number, since it uses as much as digits as its factorization.

331425031321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 331425031321 its reverse (123130524133), we get a palindrome (454555555454).

The spelling of 331425031321 in words is "three hundred thirty-one billion, four hundred twenty-five million, thirty-one thousand, three hundred twenty-one".