13012543 has 2 divisors, whose sum is σ = 13012544. Its totient is φ = 13012542.

The previous prime is 13012523. The next prime is 13012553. The reversal of 13012543 is 34521031.

13012543 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13012543 - 2¹³ = 13004351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13012543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13012523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6506271 + 6506272.

It is an arithmetic number, because the mean of its divisors is an integer number (6506272).

Almost surely, 2^13012543 is an apocalyptic number.

13012543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13012543 is an equidigital number, since it uses as much as digits as its factorization.

13012543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13012543 is about 3607.2902572430. The cubic root of 13012543 is about 235.2090670047.

Adding to 13012543 its reverse (34521031), we get a palindrome (47533574).

It can be divided in two parts, 1301 and 2543, that added together give a square (3844 = 62²).

The spelling of 13012543 in words is "thirteen million, twelve thousand, five hundred forty-three".