13143541 has 4 divisors (see below), whose sum is σ = 13151052. Its totient is φ = 13136032.

The previous prime is 13143539. The next prime is 13143551. The reversal of 13143541 is 14534131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2187441 + 10956100 = 1479^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 13143541 - 2¹ = 13143539 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 (13143551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (3287763).

Almost surely, 2^13143541 is an apocalyptic number.

It is an amenable number.

13143541 is a deficient number, since it is larger than the sum of its proper divisors (7511).

13143541 is an equidigital number, since it uses as much as digits as its factorization.

13143541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510.

The product of its digits is 720, while the sum is 22.

The square root of 13143541 is about 3625.4021845859. The cubic root of 13143541 is about 235.9957207402.

Adding to 13143541 its reverse (14534131), we get a palindrome (27677672).

It can be divided in two parts, 131435 and 41, that multiplied together give a palindrome (5388835).

The spelling of 13143541 in words is "thirteen million, one hundred forty-three thousand, five hundred forty-one".