111031311321 has 24 divisors (see below), whose sum is σ = 187030396800. Its totient is φ = 63446461848.

The previous prime is 111031311277. The next prime is 111031311341. The reversal of 111031311321 is 123113130111.

111031311321 is a `hidden beast` number, since 1 + 1 + 1 + 0 + 31 + 311 + 321 = 666.

It is not a de Polignac number, because 111031311321 - 2¹⁴ = 111031294937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111031311294 and 111031311303.

It is not an unprimeable number, because it can be changed into a prime (111031311341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17980605 + ... + 17986778.

It is an arithmetic number, because the mean of its divisors is an integer number (7792933200).

Almost surely, 2^111031311321 is an apocalyptic number.

It is an amenable number.

111031311321 is a deficient number, since it is larger than the sum of its proper divisors (75999085479).

111031311321 is an equidigital number, since it uses as much as digits as its factorization.

111031311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35967410 (or 35967393 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111031311321 its reverse (123113130111), we get a palindrome (234144441432).

The spelling of 111031311321 in words is "one hundred eleven billion, thirty-one million, three hundred eleven thousand, three hundred twenty-one".