331313031121 has 2 divisors, whose sum is σ = 331313031122. Its totient is φ = 331313031120.

The previous prime is 331313031109. The next prime is 331313031167. The reversal of 331313031121 is 121130313133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206093300625 + 125219730496 = 453975^2 + 353864^2 .

It is a cyclic number.

It is not a de Polignac number, because 331313031121 - 2⁵ = 331313031089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331313031092 and 331313031101.

It is not a weakly prime, because it can be changed into another prime (331313035121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165656515560 + 165656515561.

It is an arithmetic number, because the mean of its divisors is an integer number (165656515561).

Almost surely, 2^331313031121 is an apocalyptic number.

It is an amenable number.

331313031121 is a deficient number, since it is larger than the sum of its proper divisors (1).

331313031121 is an equidigital number, since it uses as much as digits as its factorization.

331313031121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 331313031121 its reverse (121130313133), we get a palindrome (452443344254).

The spelling of 331313031121 in words is "three hundred thirty-one billion, three hundred thirteen million, thirty-one thousand, one hundred twenty-one".