111243445331 has 4 divisors (see below), whose sum is σ = 111311820312. Its totient is φ = 111175070352.

The previous prime is 111243445289. The next prime is 111243445337. The reversal of 111243445331 is 133544342111.

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

It is a cyclic number.

It is not a de Polignac number, because 111243445331 - 2⁶ = 111243445267 is a prime.

It is a super-2 number, since 2×111243445331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111243445337) 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, 34185050 + ... + 34188303.

It is an arithmetic number, because the mean of its divisors is an integer number (27827955078).

Almost surely, 2^111243445331 is an apocalyptic number.

111243445331 is a deficient number, since it is larger than the sum of its proper divisors (68374981).

111243445331 is an equidigital number, since it uses as much as digits as its factorization.

111243445331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68374980.

The product of its digits is 17280, while the sum is 32.

Adding to 111243445331 its reverse (133544342111), we get a palindrome (244787787442).

The spelling of 111243445331 in words is "one hundred eleven billion, two hundred forty-three million, four hundred forty-five thousand, three hundred thirty-one".