13243541 has 6 divisors (see below), whose sum is σ = 13685526. Its totient is φ = 12815400.

The previous prime is 13243537. The next prime is 13243547. The reversal of 13243541 is 14534231.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 1615441 = 3410^2 + 1271^2 .

It is not a de Polignac number, because 13243541 - 2² = 13243537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5930 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (2280921).

Almost surely, 2^13243541 is an apocalyptic number.

It is an amenable number.

13243541 is a deficient number, since it is larger than the sum of its proper divisors (441985).

13243541 is an equidigital number, since it uses as much as digits as its factorization.

13243541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843 (or 13812 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 13243541 is about 3639.1676246087. The cubic root of 13243541 is about 236.5927179752.

Adding to 13243541 its reverse (14534231), we get a palindrome (27777772).

The spelling of 13243541 in words is "thirteen million, two hundred forty-three thousand, five hundred forty-one".