311321411 has 2 divisors, whose sum is σ = 311321412. Its totient is φ = 311321410.

The previous prime is 311321407. The next prime is 311321431. The reversal of 311321411 is 114123113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311321411 - 2² = 311321407 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311321411.

It is not a weakly prime, because it can be changed into another prime (311321431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660705 + 155660706.

It is an arithmetic number, because the mean of its divisors is an integer number (155660706).

Almost surely, 2^311321411 is an apocalyptic number.

311321411 is a deficient number, since it is larger than the sum of its proper divisors (1).

311321411 is an equidigital number, since it uses as much as digits as its factorization.

311321411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 311321411 is about 17644.3025081753. The cubic root of 311321411 is about 677.7502139935.

Adding to 311321411 its reverse (114123113), we get a palindrome (425444524).

The spelling of 311321411 in words is "three hundred eleven million, three hundred twenty-one thousand, four hundred eleven".