111240013 has 2 divisors, whose sum is σ = 111240014. Its totient is φ = 111240012.

The previous prime is 111239987. The next prime is 111240043. The reversal of 111240013 is 310042111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 54493924 = 7533^2 + 7382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111240013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111239975 and 111240002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111240043) 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, 55620006 + 55620007.

It is an arithmetic number, because the mean of its divisors is an integer number (55620007).

Almost surely, 2^111240013 is an apocalyptic number.

It is an amenable number.

111240013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111240013 is an equidigital number, since it uses as much as digits as its factorization.

111240013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111240013 is about 10547.0381150350. The cubic root of 111240013 is about 480.9356936174.

Adding to 111240013 its reverse (310042111), we get a palindrome (421282124).

The spelling of 111240013 in words is "one hundred eleven million, two hundred forty thousand, thirteen".