12113663 has 4 divisors (see below), whose sum is σ = 12640368. Its totient is φ = 11586960.

The previous prime is 12113657. The next prime is 12113669. The reversal of 12113663 is 36631121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36631121 = 431 ⋅84991.

It is an interprime number because it is at equal distance from previous prime (12113657) and next prime (12113669).

It is a cyclic number.

It is not a de Polignac number, because 12113663 - 2⁶ = 12113599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 526681 = 12113663 / (1 + 2 + 1 + 1 + 3 + 6 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263318 + ... + 263363.

It is an arithmetic number, because the mean of its divisors is an integer number (3160092).

Almost surely, 2^12113663 is an apocalyptic number.

12113663 is a deficient number, since it is larger than the sum of its proper divisors (526705).

12113663 is an equidigital number, since it uses as much as digits as its factorization.

12113663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526704.

The product of its digits is 648, while the sum is 23.

The square root of 12113663 is about 3480.4687902637. The cubic root of 12113663 is about 229.6634207377.

Adding to 12113663 its reverse (36631121), we get a palindrome (48744784).

The spelling of 12113663 in words is "twelve million, one hundred thirteen thousand, six hundred sixty-three".