12235513 has 4 divisors (see below), whose sum is σ = 12283380. Its totient is φ = 12187648.

The previous prime is 12235511. The next prime is 12235543. The reversal of 12235513 is 31553221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31553221 = 7 ⋅4507603.

It can be written as a sum of positive squares in 2 ways, for example, as 10036224 + 2199289 = 3168^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 12235513 - 2¹ = 12235511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12235511) 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, 23548 + ... + 24061.

It is an arithmetic number, because the mean of its divisors is an integer number (3070845).

Almost surely, 2^12235513 is an apocalyptic number.

It is an amenable number.

12235513 is a deficient number, since it is larger than the sum of its proper divisors (47867).

12235513 is an equidigital number, since it uses as much as digits as its factorization.

12235513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47866.

The product of its digits is 900, while the sum is 22.

The square root of 12235513 is about 3497.9298163342. The cubic root of 12235513 is about 230.4309061168.

Adding to 12235513 its reverse (31553221), we get a palindrome (43788734).

The spelling of 12235513 in words is "twelve million, two hundred thirty-five thousand, five hundred thirteen".