11311321230 has 192 divisors, whose sum is σ = 33618364416. Its totient is φ = 2613600000.

The previous prime is 11311321213. The next prime is 11311321237. The reversal of 11311321230 is 3212311311.

11311321230 is a `hidden beast` number, since 1 + 1 + 311 + 321 + 2 + 30 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311321237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2053480 + ... + 2058980.

It is an arithmetic number, because the mean of its divisors is an integer number (175095648).

Almost surely, 2^11311321230 is an apocalyptic number.

11311321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11311321230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16809182208).

11311321230 is an abundant number, since it is smaller than the sum of its proper divisors (22307043186).

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

11311321230 is a wasteful number, since it uses less digits than its factorization.

11311321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11311321230 its reverse (3212311311), we get a palindrome (14523632541).

The spelling of 11311321230 in words is "eleven billion, three hundred eleven million, three hundred twenty-one thousand, two hundred thirty".