13811113 has 2 divisors, whose sum is σ = 13811114. Its totient is φ = 13811112.

The previous prime is 13811087. The next prime is 13811131. The reversal of 13811113 is 31111831.

Together with next prime (13811131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7601049 + 6210064 = 2757^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 13811113 - 2¹⁷ = 13680041 is a prime.

It is not a weakly prime, because it can be changed into another prime (13811173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6905556 + 6905557.

It is an arithmetic number, because the mean of its divisors is an integer number (6905557).

Almost surely, 2^13811113 is an apocalyptic number.

It is an amenable number.

13811113 is a deficient number, since it is larger than the sum of its proper divisors (1).

13811113 is an equidigital number, since it uses as much as digits as its factorization.

13811113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 19.

The square root of 13811113 is about 3716.3305827119. The cubic root of 13811113 is about 239.9253992675.

Adding to 13811113 its reverse (31111831), we get a palindrome (44922944).

It can be divided in two parts, 13811 and 113, that added together give a square (13924 = 118²).

The spelling of 13811113 in words is "thirteen million, eight hundred eleven thousand, one hundred thirteen".