12163513 has 4 divisors (see below), whose sum is σ = 12185460. Its totient is φ = 12141568.

The previous prime is 12163423. The next prime is 12163519. The reversal of 12163513 is 31536121.

It is a happy number.

12163513 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31536121 = 1217 ⋅25913.

It can be written as a sum of positive squares in 2 ways, for example, as 1352569 + 10810944 = 1163^2 + 3288^2 .

It is a cyclic number.

It is not a de Polignac number, because 12163513 - 2⁹ = 12163001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12163519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10120 + ... + 11257.

It is an arithmetic number, because the mean of its divisors is an integer number (3046365).

Almost surely, 2^12163513 is an apocalyptic number.

It is an amenable number.

12163513 is a deficient number, since it is larger than the sum of its proper divisors (21947).

12163513 is an equidigital number, since it uses as much as digits as its factorization.

12163513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946.

The product of its digits is 540, while the sum is 22.

The square root of 12163513 is about 3487.6228293782. The cubic root of 12163513 is about 229.9780256259.

Adding to 12163513 its reverse (31536121), we get a palindrome (43699634).

The spelling of 12163513 in words is "twelve million, one hundred sixty-three thousand, five hundred thirteen".