2311321122 has 128 divisors (see below), whose sum is σ = 6071915520. Its totient is φ = 643749120.

The previous prime is 2311321087. The next prime is 2311321151. The reversal of 2311321122 is 2211231132.

It is a super-3 number, since 3×2311321122³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2311321095 and 2311321104.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 431553 + ... + 436875.

It is an arithmetic number, because the mean of its divisors is an integer number (47436840).

Almost surely, 2^2311321122 is an apocalyptic number.

2311321122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311321122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3035957760).

2311321122 is an abundant number, since it is smaller than the sum of its proper divisors (3760594398).

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

2311321122 is a wasteful number, since it uses less digits than its factorization.

2311321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405 (or 5399 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2311321122 is about 48076.2012018421. The cubic root of 2311321122 is about 1322.1683678835.

Adding to 2311321122 its reverse (2211231132), we get a palindrome (4522552254).

The spelling of 2311321122 in words is "two billion, three hundred eleven million, three hundred twenty-one thousand, one hundred twenty-two".