111004123231 has 4 divisors (see below), whose sum is σ = 111078774432. Its totient is φ = 110929472032.

The previous prime is 111004123229. The next prime is 111004123249. The reversal of 111004123231 is 132321400111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132321400111 = 827 ⋅160001693.

It is a cyclic number.

It is not a de Polignac number, because 111004123231 - 2¹ = 111004123229 is a prime.

It is a super-2 number, since 2×111004123231² (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 = 111004123199 and 111004123208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111004123211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37323370 + ... + 37326343.

It is an arithmetic number, because the mean of its divisors is an integer number (27769693608).

Almost surely, 2^111004123231 is an apocalyptic number.

111004123231 is a deficient number, since it is larger than the sum of its proper divisors (74651201).

111004123231 is an equidigital number, since it uses as much as digits as its factorization.

111004123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74651200.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111004123231 its reverse (132321400111), we get a palindrome (243325523342).

The spelling of 111004123231 in words is "one hundred eleven billion, four million, one hundred twenty-three thousand, two hundred thirty-one".