111023641 has 2 divisors, whose sum is σ = 111023642. Its totient is φ = 111023640.

The previous prime is 111023621. The next prime is 111023659. The reversal of 111023641 is 146320111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57441241 + 53582400 = 7579^2 + 7320^2 .

It is a cyclic number.

It is not a de Polignac number, because 111023641 - 2¹¹ = 111021593 is a prime.

It is not a weakly prime, because it can be changed into another prime (111023611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511820 + 55511821.

It is an arithmetic number, because the mean of its divisors is an integer number (55511821).

Almost surely, 2^111023641 is an apocalyptic number.

It is an amenable number.

111023641 is a deficient number, since it is larger than the sum of its proper divisors (1).

111023641 is an equidigital number, since it uses as much as digits as its factorization.

111023641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 111023641 is about 10536.7756453291. The cubic root of 111023641 is about 480.6236699204.

Adding to 111023641 its reverse (146320111), we get a palindrome (257343752).

The spelling of 111023641 in words is "one hundred eleven million, twenty-three thousand, six hundred forty-one".