43131241 has 4 divisors (see below), whose sum is σ = 43945092. Its totient is φ = 42317392.

The previous prime is 43131239. The next prime is 43131259. The reversal of 43131241 is 14213134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33396841 + 9734400 = 5779^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 43131241 - 2¹ = 43131239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43131041) 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, 406846 + ... + 406951.

It is an arithmetic number, because the mean of its divisors is an integer number (10986273).

Almost surely, 2^43131241 is an apocalyptic number.

It is an amenable number.

43131241 is a deficient number, since it is larger than the sum of its proper divisors (813851).

43131241 is an equidigital number, since it uses as much as digits as its factorization.

43131241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813850.

The product of its digits is 288, while the sum is 19.

The square root of 43131241 is about 6567.4379327101. The cubic root of 43131241 is about 350.6958699762.

Adding to 43131241 its reverse (14213134), we get a palindrome (57344375).

The spelling of 43131241 in words is "forty-three million, one hundred thirty-one thousand, two hundred forty-one".