311777121223 has 8 divisors (see below), whose sum is σ = 317256726528. Its totient is φ = 306321816504.

The previous prime is 311777121217. The next prime is 311777121247. The reversal of 311777121223 is 322121777113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311777121223 - 2⁵ = 311777121191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311777191223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6049261 + ... + 6100582.

It is an arithmetic number, because the mean of its divisors is an integer number (39657090816).

Almost surely, 2^311777121223 is an apocalyptic number.

311777121223 is a deficient number, since it is larger than the sum of its proper divisors (5479605305).

311777121223 is a wasteful number, since it uses less digits than its factorization.

311777121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12150293.

The product of its digits is 24696, while the sum is 37.

Adding to 311777121223 its reverse (322121777113), we get a palindrome (633898898336).

The spelling of 311777121223 in words is "three hundred eleven billion, seven hundred seventy-seven million, one hundred twenty-one thousand, two hundred twenty-three".