12538311 has 4 divisors (see below), whose sum is σ = 16717752. Its totient is φ = 8358872.

The previous prime is 12538307. The next prime is 12538319. The reversal of 12538311 is 11383521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11383521 = 3 ⋅3794507.

It is a cyclic number.

It is not a de Polignac number, because 12538311 - 2² = 12538307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538319) 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, 2089716 + ... + 2089721.

It is an arithmetic number, because the mean of its divisors is an integer number (4179438).

Almost surely, 2^12538311 is an apocalyptic number.

12538311 is a deficient number, since it is larger than the sum of its proper divisors (4179441).

12538311 is an equidigital number, since it uses as much as digits as its factorization.

12538311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179440.

The product of its digits is 720, while the sum is 24.

The square root of 12538311 is about 3540.9477544861. The cubic root of 12538311 is about 232.3162984124.

The spelling of 12538311 in words is "twelve million, five hundred thirty-eight thousand, three hundred eleven".