111501613 has 2 divisors, whose sum is σ = 111501614. Its totient is φ = 111501612.

The previous prime is 111501583. The next prime is 111501629. The reversal of 111501613 is 316105111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106564329 + 4937284 = 10323^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 111501613 - 2¹⁷ = 111370541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111501713) 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, 55750806 + 55750807.

It is an arithmetic number, because the mean of its divisors is an integer number (55750807).

Almost surely, 2^111501613 is an apocalyptic number.

It is an amenable number.

111501613 is a deficient number, since it is larger than the sum of its proper divisors (1).

111501613 is an equidigital number, since it uses as much as digits as its factorization.

111501613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 111501613 is about 10559.4324184589. The cubic root of 111501613 is about 481.3123994425.

Adding to 111501613 its reverse (316105111), we get a palindrome (427606724).

The spelling of 111501613 in words is "one hundred eleven million, five hundred one thousand, six hundred thirteen".