111420311231 has 8 divisors (see below), whose sum is σ = 114469171104. Its totient is φ = 108373425120.

The previous prime is 111420311137. The next prime is 111420311243. The reversal of 111420311231 is 132113024111.

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 111420311231 - 2¹⁸ = 111420049087 is a prime.

It is a super-2 number, since 2×111420311231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111420314231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378635 + ... + 605148.

It is an arithmetic number, because the mean of its divisors is an integer number (14308646388).

Almost surely, 2^111420311231 is an apocalyptic number.

111420311231 is a deficient number, since it is larger than the sum of its proper divisors (3048859873).

111420311231 is an equidigital number, since it uses as much as digits as its factorization.

111420311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986881.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 111420311231 its reverse (132113024111), we get a palindrome (243533335342).

The spelling of 111420311231 in words is "one hundred eleven billion, four hundred twenty million, three hundred eleven thousand, two hundred thirty-one".