111231323023 has 2 divisors, whose sum is σ = 111231323024. Its totient is φ = 111231323022.

The previous prime is 111231322987. The next prime is 111231323053. The reversal of 111231323023 is 320323132111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111231323023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111231322985 and 111231323003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111231323053) 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 as a sum of consecutive naturals, namely, 55615661511 + 55615661512.

It is an arithmetic number, because the mean of its divisors is an integer number (55615661512).

Almost surely, 2^111231323023 is an apocalyptic number.

111231323023 is a deficient number, since it is larger than the sum of its proper divisors (1).

111231323023 is an equidigital number, since it uses as much as digits as its factorization.

111231323023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 111231323023 its reverse (320323132111), we get a palindrome (431554455134).

The spelling of 111231323023 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred twenty-three thousand, twenty-three".