311122022224 has 80 divisors (see below), whose sum is σ = 662543219520. Its totient is φ = 140660213760.

The previous prime is 311122022221. The next prime is 311122022243. The reversal of 311122022224 is 422220221113.

It is a super-2 number, since 2×311122022224² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311122022195 and 311122022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311122022221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2432184 + ... + 2556904.

It is an arithmetic number, because the mean of its divisors is an integer number (8281790244).

Almost surely, 2^311122022224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311122022224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331271609760).

311122022224 is an abundant number, since it is smaller than the sum of its proper divisors (351421197296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311122022224 is a wasteful number, since it uses less digits than its factorization.

311122022224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124988 (or 124982 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 311122022224 its reverse (422220221113), we get a palindrome (733342243337).

The spelling of 311122022224 in words is "three hundred eleven billion, one hundred twenty-two million, twenty-two thousand, two hundred twenty-four".