13123237 has 2 divisors, whose sum is σ = 13123238. Its totient is φ = 13123236.

The previous prime is 13123219. The next prime is 13123247. The reversal of 13123237 is 73232131.

It is a happy number.

13123237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12432676 + 690561 = 3526^2 + 831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13123237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13123207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561618 + 6561619.

It is an arithmetic number, because the mean of its divisors is an integer number (6561619).

Almost surely, 2^13123237 is an apocalyptic number.

It is an amenable number.

13123237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123237 is an equidigital number, since it uses as much as digits as its factorization.

13123237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 22.

The square root of 13123237 is about 3622.6008612598. The cubic root of 13123237 is about 235.8741368991.

Adding to 13123237 its reverse (73232131), we get a palindrome (86355368).

It can be divided in two parts, 131232 and 37, that multiplied together give a palindrome (4855584).

The spelling of 13123237 in words is "thirteen million, one hundred twenty-three thousand, two hundred thirty-seven".