111311304231 has 8 divisors (see below), whose sum is σ = 149325594880. Its totient is φ = 73752274872.

The previous prime is 111311304227. The next prime is 111311304239. The reversal of 111311304231 is 132403113111.

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

It is not a de Polignac number, because 111311304231 - 2² = 111311304227 is a prime.

It is a super-2 number, since 2×111311304231² (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 = 111311304198 and 111311304207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311304239) 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, 113814751 + ... + 113815728.

It is an arithmetic number, because the mean of its divisors is an integer number (18665699360).

Almost surely, 2^111311304231 is an apocalyptic number.

111311304231 is a deficient number, since it is larger than the sum of its proper divisors (38014290649).

111311304231 is a wasteful number, since it uses less digits than its factorization.

111311304231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227630645.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 111311304231 its reverse (132403113111), we get a palindrome (243714417342).

The spelling of 111311304231 in words is "one hundred eleven billion, three hundred eleven million, three hundred four thousand, two hundred thirty-one".