23123334311220 has 288 divisors, whose sum is σ = 76819398243840. Its totient is φ = 5151651847680.

The previous prime is 23123334311177. The next prime is 23123334311221. The reversal of 23123334311220 is 2211343332132.

It is a super-2 number, since 2×23123334311220² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123334311221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24862951 + ... + 25776209.

It is an arithmetic number, because the mean of its divisors is an integer number (266734021680).

Almost surely, 2^{23123334311220} is an apocalyptic number.

23123334311220 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 23123334311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38409699121920).

23123334311220 is an abundant number, since it is smaller than the sum of its proper divisors (53696063932620).

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

23123334311220 is a wasteful number, since it uses less digits than its factorization.

23123334311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913535 (or 913520 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 23123334311220 its reverse (2211343332132), we get a palindrome (25334677643352).

The spelling of 23123334311220 in words is "twenty-three trillion, one hundred twenty-three billion, three hundred thirty-four million, three hundred eleven thousand, two hundred twenty".