111343052431 has 4 divisors (see below), whose sum is σ = 119907902632. Its totient is φ = 102778202232.

The previous prime is 111343052413. The next prime is 111343052449. The reversal of 111343052431 is 134250343111.

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

It is an interprime number because it is at equal distance from previous prime (111343052413) and next prime (111343052449).

It is a cyclic number.

It is not a de Polignac number, because 111343052431 - 2⁵ = 111343052399 is a prime.

It is a super-2 number, since 2×111343052431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111343052431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111343052461) 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, 4282425081 + ... + 4282425106.

It is an arithmetic number, because the mean of its divisors is an integer number (29976975658).

Almost surely, 2^111343052431 is an apocalyptic number.

111343052431 is a deficient number, since it is larger than the sum of its proper divisors (8564850201).

111343052431 is an equidigital number, since it uses as much as digits as its factorization.

111343052431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564850200.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 111343052431 its reverse (134250343111), we get a palindrome (245593395542).

The spelling of 111343052431 in words is "one hundred eleven billion, three hundred forty-three million, fifty-two thousand, four hundred thirty-one".