111143002431 has 4 divisors (see below), whose sum is σ = 148190669912. Its totient is φ = 74095334952.

The previous prime is 111143002427. The next prime is 111143002513. The reversal of 111143002431 is 134200341111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111143002431 - 2² = 111143002427 is a prime.

It is a super-2 number, since 2×111143002431² (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 = 111143002398 and 111143002407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111143002031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18523833736 + ... + 18523833741.

It is an arithmetic number, because the mean of its divisors is an integer number (37047667478).

Almost surely, 2^111143002431 is an apocalyptic number.

111143002431 is a deficient number, since it is larger than the sum of its proper divisors (37047667481).

111143002431 is an equidigital number, since it uses as much as digits as its factorization.

111143002431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37047667480.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 111143002431 its reverse (134200341111), we get a palindrome (245343343542).

The spelling of 111143002431 in words is "one hundred eleven billion, one hundred forty-three million, two thousand, four hundred thirty-one".