111144303231 has 20 divisors (see below), whose sum is σ = 160541462712. Its totient is φ = 68396441568.

The previous prime is 111144303197. The next prime is 111144303251. The reversal of 111144303231 is 132303441111.

It is a happy number.

It is not a de Polignac number, because 111144303231 - 2¹⁰ = 111144302207 is a prime.

It is a super-2 number, since 2×111144303231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111144303251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 562896 + ... + 734261.

Almost surely, 2^111144303231 is an apocalyptic number.

111144303231 is a deficient number, since it is larger than the sum of its proper divisors (49397159481).

111144303231 is an frugal number, since it uses more digits than its factorization.

111144303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297212 (or 1297173 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 111144303231 its reverse (132303441111), we get a palindrome (243447744342).

The spelling of 111144303231 in words is "one hundred eleven billion, one hundred forty-four million, three hundred three thousand, two hundred thirty-one".