2311332211320 has 256 divisors, whose sum is σ = 7988353228800. Its totient is φ = 529503152640.

The previous prime is 2311332211303. The next prime is 2311332211333. The reversal of 2311332211320 is 231122331132.

It is a super-2 number, since 2×2311332211320² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2061261 + ... + 2978499.

It is an arithmetic number, because the mean of its divisors is an integer number (31204504800).

Almost surely, 2^{2311332211320} is an apocalyptic number.

2311332211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311332211320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3994176614400).

2311332211320 is an abundant number, since it is smaller than the sum of its proper divisors (5677021017480).

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

2311332211320 is a wasteful number, since it uses less digits than its factorization.

2311332211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917370 (or 917366 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2311332211320 its reverse (231122331132), we get a palindrome (2542454542452).

The spelling of 2311332211320 in words is "two trillion, three hundred eleven billion, three hundred thirty-two million, two hundred eleven thousand, three hundred twenty".