111442310431 has 4 divisors (see below), whose sum is σ = 111671145232. Its totient is φ = 111213475632.

The previous prime is 111442310429. The next prime is 111442310479. The reversal of 111442310431 is 134013244111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134013244111 = 149021 ⋅899291.

It is a cyclic number.

It is not a de Polignac number, because 111442310431 - 2¹ = 111442310429 is a prime.

It is a super-2 number, since 2×111442310431² (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 = 111442310396 and 111442310405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111442310531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114416670 + ... + 114417643.

It is an arithmetic number, because the mean of its divisors is an integer number (27917786308).

Almost surely, 2^111442310431 is an apocalyptic number.

111442310431 is a deficient number, since it is larger than the sum of its proper divisors (228834801).

111442310431 is an equidigital number, since it uses as much as digits as its factorization.

111442310431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228834800.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 111442310431 its reverse (134013244111), we get a palindrome (245455554542).

The spelling of 111442310431 in words is "one hundred eleven billion, four hundred forty-two million, three hundred ten thousand, four hundred thirty-one".