111523234321 has 2 divisors, whose sum is σ = 111523234322. Its totient is φ = 111523234320.

The previous prime is 111523234313. The next prime is 111523234363. The reversal of 111523234321 is 123432325111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83937678400 + 27585555921 = 289720^2 + 166089^2 .

It is a cyclic number.

It is not a de Polignac number, because 111523234321 - 2³ = 111523234313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111523234321.

It is not a weakly prime, because it can be changed into another prime (111523234021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55761617160 + 55761617161.

It is an arithmetic number, because the mean of its divisors is an integer number (55761617161).

Almost surely, 2^111523234321 is an apocalyptic number.

It is an amenable number.

111523234321 is a deficient number, since it is larger than the sum of its proper divisors (1).

111523234321 is an equidigital number, since it uses as much as digits as its factorization.

111523234321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

Adding to 111523234321 its reverse (123432325111), we get a palindrome (234955559432).

The spelling of 111523234321 in words is "one hundred eleven billion, five hundred twenty-three million, two hundred thirty-four thousand, three hundred twenty-one".