111431044331 has 4 divisors (see below), whose sum is σ = 112453347600. Its totient is φ = 110408741064.

The previous prime is 111431044273. The next prime is 111431044369. The reversal of 111431044331 is 133440134111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133440134111 = 503 ⋅265288537.

It is a cyclic number.

It is not a de Polignac number, because 111431044331 - 2³⁰ = 110357302507 is a prime.

It is a super-2 number, since 2×111431044331² (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 111431044331.

It is not an unprimeable number, because it can be changed into a prime (111431043331) 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, 511151471 + ... + 511151688.

It is an arithmetic number, because the mean of its divisors is an integer number (28113336900).

Almost surely, 2^111431044331 is an apocalyptic number.

111431044331 is a deficient number, since it is larger than the sum of its proper divisors (1022303269).

111431044331 is a wasteful number, since it uses less digits than its factorization.

111431044331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022303268.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 111431044331 its reverse (133440134111), we get a palindrome (244871178442).

The spelling of 111431044331 in words is "one hundred eleven billion, four hundred thirty-one million, forty-four thousand, three hundred thirty-one".