111531423441 has 8 divisors (see below), whose sum is σ = 148771030464. Its totient is φ = 74323049360.

The previous prime is 111531423401. The next prime is 111531423533. The reversal of 111531423441 is 144324135111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111531423441 - 2¹⁵ = 111531390673 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111531423399 and 111531423408.

It is not an unprimeable number, because it can be changed into a prime (111531423401) 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 7 ways as a sum of consecutive naturals, for example, 7799901 + ... + 7814186.

It is an arithmetic number, because the mean of its divisors is an integer number (18596378808).

Almost surely, 2^111531423441 is an apocalyptic number.

It is an amenable number.

111531423441 is a deficient number, since it is larger than the sum of its proper divisors (37239607023).

111531423441 is a wasteful number, since it uses less digits than its factorization.

111531423441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15616471.

The product of its digits is 5760, while the sum is 30.

Adding to 111531423441 its reverse (144324135111), we get a palindrome (255855558552).

The spelling of 111531423441 in words is "one hundred eleven billion, five hundred thirty-one million, four hundred twenty-three thousand, four hundred forty-one".