311242042321 has 4 divisors (see below), whose sum is σ = 355705191232. Its totient is φ = 266778893412.

The previous prime is 311242042297. The next prime is 311242042379. The reversal of 311242042321 is 123240242113.

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 311242042321 - 2⁷ = 311242042193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311242042421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22231574445 + ... + 22231574458.

It is an arithmetic number, because the mean of its divisors is an integer number (88926297808).

Almost surely, 2^311242042321 is an apocalyptic number.

It is an amenable number.

311242042321 is a deficient number, since it is larger than the sum of its proper divisors (44463148911).

311242042321 is an equidigital number, since it uses as much as digits as its factorization.

311242042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44463148910.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 311242042321 its reverse (123240242113), we get a palindrome (434482284434).

The spelling of 311242042321 in words is "three hundred eleven billion, two hundred forty-two million, forty-two thousand, three hundred twenty-one".