311440042422213 has 4 divisors (see below), whose sum is σ = 415253389896288. Its totient is φ = 207626694948140.

The previous prime is 311440042422209. The next prime is 311440042422221. The reversal of 311440042422213 is 312224240044113.

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 311440042422213 - 2² = 311440042422209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311440042422263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51906673737033 + ... + 51906673737038.

It is an arithmetic number, because the mean of its divisors is an integer number (103813347474072).

Almost surely, 2^{311440042422213} is an apocalyptic number.

It is an amenable number.

311440042422213 is a deficient number, since it is larger than the sum of its proper divisors (103813347474075).

311440042422213 is a wasteful number, since it uses less digits than its factorization.

311440042422213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103813347474074.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 311440042422213 its reverse (312224240044113), we get a palindrome (623664282466326).

The spelling of 311440042422213 in words is "three hundred eleven trillion, four hundred forty billion, forty-two million, four hundred twenty-two thousand, two hundred thirteen".