111320312131 has 8 divisors (see below), whose sum is σ = 127363489280. Its totient is φ = 95312203848.

The previous prime is 111320312111. The next prime is 111320312149. The reversal of 111320312131 is 131213023111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111320312131 - 2⁷ = 111320312003 is a prime.

It is a super-2 number, since 2×111320312131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111320312099 and 111320312108.

It is not an unprimeable number, because it can be changed into a prime (111320312111) 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 7 ways as a sum of consecutive naturals, for example, 8760411 + ... + 8773108.

It is an arithmetic number, because the mean of its divisors is an integer number (15920436160).

Almost surely, 2^111320312131 is an apocalyptic number.

111320312131 is a deficient number, since it is larger than the sum of its proper divisors (16043177149).

111320312131 is an equidigital number, since it uses as much as digits as its factorization.

111320312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534433.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111320312131 its reverse (131213023111), we get a palindrome (242533335242).

The spelling of 111320312131 in words is "one hundred eleven billion, three hundred twenty million, three hundred twelve thousand, one hundred thirty-one".