311441323213421 has 2 divisors, whose sum is σ = 311441323213422. Its totient is φ = 311441323213420.

The previous prime is 311441323213399. The next prime is 311441323213453. The reversal of 311441323213421 is 124312323144113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192149360622025 + 119291962591396 = 13861795^2 + 10922086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311441323213421 is a prime.

It is a super-3 number, since 3×311441323213421³ (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 (311441323219421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155720661606710 + 155720661606711.

It is an arithmetic number, because the mean of its divisors is an integer number (155720661606711).

Almost surely, 2^{311441323213421} is an apocalyptic number.

It is an amenable number.

311441323213421 is a deficient number, since it is larger than the sum of its proper divisors (1).

311441323213421 is an equidigital number, since it uses as much as digits as its factorization.

311441323213421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

Adding to 311441323213421 its reverse (124312323144113), we get a palindrome (435753646357534).

The spelling of 311441323213421 in words is "three hundred eleven trillion, four hundred forty-one billion, three hundred twenty-three million, two hundred thirteen thousand, four hundred twenty-one".