111400343431 has 32 divisors (see below), whose sum is σ = 125306108928. Its totient is φ = 98379515520.

The previous prime is 111400343429. The next prime is 111400343497. The reversal of 111400343431 is 134343004111.

It is a happy number.

It is not a de Polignac number, because 111400343431 - 2¹ = 111400343429 is a prime.

It is a super-3 number, since 3×111400343431³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 111400343396 and 111400343405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111400343401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5352361 + ... + 5373133.

It is an arithmetic number, because the mean of its divisors is an integer number (3915815904).

Almost surely, 2^111400343431 is an apocalyptic number.

111400343431 is a deficient number, since it is larger than the sum of its proper divisors (13905765497).

111400343431 is a wasteful number, since it uses less digits than its factorization.

111400343431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21031.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 111400343431 its reverse (134343004111), we get a palindrome (245743347542).

The spelling of 111400343431 in words is "one hundred eleven billion, four hundred million, three hundred forty-three thousand, four hundred thirty-one".