111312321230 has 32 divisors (see below), whose sum is σ = 218662956000. Its totient is φ = 40461275520.

The previous prime is 111312321221. The next prime is 111312321259. The reversal of 111312321230 is 32123213111.

It is a happy number.

It is a super-2 number, since 2×111312321230² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83396 + ... + 479144.

It is an arithmetic number, because the mean of its divisors is an integer number (6833217375).

Almost surely, 2^111312321230 is an apocalyptic number.

111312321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111312321230 is a deficient number, since it is larger than the sum of its proper divisors (107350634770).

111312321230 is a wasteful number, since it uses less digits than its factorization.

111312321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398324.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111312321230 its reverse (32123213111), we get a palindrome (143435534341).

The spelling of 111312321230 in words is "one hundred eleven billion, three hundred twelve million, three hundred twenty-one thousand, two hundred thirty".