311242241 has 4 divisors (see below), whose sum is σ = 311442432. Its totient is φ = 311042052.

The previous prime is 311242237. The next prime is 311242303. The reversal of 311242241 is 142242113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311242241 - 2² = 311242237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311242231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97745 + ... + 100878.

It is an arithmetic number, because the mean of its divisors is an integer number (77860608).

Almost surely, 2^311242241 is an apocalyptic number.

It is an amenable number.

311242241 is a deficient number, since it is larger than the sum of its proper divisors (200191).

311242241 is a wasteful number, since it uses less digits than its factorization.

311242241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200190.

The product of its digits is 384, while the sum is 20.

The square root of 311242241 is about 17642.0588651098. The cubic root of 311242241 is about 677.6927577959.

Adding to 311242241 its reverse (142242113), we get a palindrome (453484354).

The spelling of 311242241 in words is "three hundred eleven million, two hundred forty-two thousand, two hundred forty-one".