321311121121351 has 2 divisors, whose sum is σ = 321311121121352. Its totient is φ = 321311121121350.

The previous prime is 321311121121189. The next prime is 321311121121553. The reversal of 321311121121351 is 153121121113123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321311121121351 - 2²⁷ = 321310986903623 is a prime.

It is a super-3 number, since 3×321311121121351³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321311121122351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160655560560675 + 160655560560676.

It is an arithmetic number, because the mean of its divisors is an integer number (160655560560676).

Almost surely, 2^{321311121121351} is an apocalyptic number.

321311121121351 is a deficient number, since it is larger than the sum of its proper divisors (1).

321311121121351 is an equidigital number, since it uses as much as digits as its factorization.

321311121121351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 28.

Adding to 321311121121351 its reverse (153121121113123), we get a palindrome (474432242234474).

The spelling of 321311121121351 in words is "three hundred twenty-one trillion, three hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred fifty-one".