311440042322201 has 4 divisors (see below), whose sum is σ = 335396968654692. Its totient is φ = 287483115989712.

The previous prime is 311440042322179. The next prime is 311440042322219. The reversal of 311440042322201 is 102223240044113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76998010072201 + 234442032250000 = 8774851^2 + 15311500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311440042322201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311440042322261) 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, 11978463166226 + ... + 11978463166251.

It is an arithmetic number, because the mean of its divisors is an integer number (83849242163673).

Almost surely, 2^{311440042322201} is an apocalyptic number.

It is an amenable number.

311440042322201 is a deficient number, since it is larger than the sum of its proper divisors (23956926332491).

311440042322201 is a wasteful number, since it uses less digits than its factorization.

311440042322201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23956926332490.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 311440042322201 its reverse (102223240044113), we get a palindrome (413663282366314).

The spelling of 311440042322201 in words is "three hundred eleven trillion, four hundred forty billion, forty-two million, three hundred twenty-two thousand, two hundred one".