111131422143 has 24 divisors (see below), whose sum is σ = 182506349232. Its totient is φ = 59768158464.

The previous prime is 111131422139. The next prime is 111131422147. The reversal of 111131422143 is 341224131111.

It is an interprime number because it is at equal distance from previous prime (111131422139) and next prime (111131422147).

It is not a de Polignac number, because 111131422143 - 2² = 111131422139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131422147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22232680 + ... + 22237677.

It is an arithmetic number, because the mean of its divisors is an integer number (7604431218).

Almost surely, 2^111131422143 is an apocalyptic number.

111131422143 is a deficient number, since it is larger than the sum of its proper divisors (71374927089).

111131422143 is a wasteful number, since it uses less digits than its factorization.

111131422143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44470391 (or 44470384 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

Adding to 111131422143 its reverse (341224131111), we get a palindrome (452355553254).

The spelling of 111131422143 in words is "one hundred eleven billion, one hundred thirty-one million, four hundred twenty-two thousand, one hundred forty-three".