731138041 has 2 divisors, whose sum is σ = 731138042. Its totient is φ = 731138040.

The previous prime is 731138027. The next prime is 731138047. The reversal of 731138041 is 140831137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 702462016 + 28676025 = 26504^2 + 5355^2 .

It is an emirp because it is prime and its reverse (140831137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 731138041 - 2¹³ = 731129849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (731138047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365569020 + 365569021.

It is an arithmetic number, because the mean of its divisors is an integer number (365569021).

Almost surely, 2^731138041 is an apocalyptic number.

It is an amenable number.

731138041 is a deficient number, since it is larger than the sum of its proper divisors (1).

731138041 is an equidigital number, since it uses as much as digits as its factorization.

731138041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 731138041 is about 27039.5643640943. The cubic root of 731138041 is about 900.8789935066.

Adding to 731138041 its reverse (140831137), we get a palindrome (871969178).

The spelling of 731138041 in words is "seven hundred thirty-one million, one hundred thirty-eight thousand, forty-one".