311301121 has 2 divisors, whose sum is σ = 311301122. Its totient is φ = 311301120.

The previous prime is 311301119. The next prime is 311301131. The reversal of 311301121 is 121103113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304118721 + 7182400 = 17439^2 + 2680^2 .

It is an emirp because it is prime and its reverse (121103113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311301121 - 2¹ = 311301119 is a prime.

Together with 311301119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (311301131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155650560 + 155650561.

It is an arithmetic number, because the mean of its divisors is an integer number (155650561).

Almost surely, 2^311301121 is an apocalyptic number.

It is an amenable number.

311301121 is a deficient number, since it is larger than the sum of its proper divisors (1).

311301121 is an equidigital number, since it uses as much as digits as its factorization.

311301121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 311301121 is about 17643.7275256676. The cubic root of 311301121 is about 677.7354898208.

Adding to 311301121 its reverse (121103113), we get a palindrome (432404234).

The spelling of 311301121 in words is "three hundred eleven million, three hundred one thousand, one hundred twenty-one".