731131241 has 2 divisors, whose sum is σ = 731131242. Its totient is φ = 731131240.

The previous prime is 731131157. The next prime is 731131309. The reversal of 731131241 is 142131137.

It is a happy number.

731131241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494617600 + 236513641 = 22240^2 + 15379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731131241 is a prime.

It is not a weakly prime, because it can be changed into another prime (731131741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365565620 + 365565621.

It is an arithmetic number, because the mean of its divisors is an integer number (365565621).

Almost surely, 2^731131241 is an apocalyptic number.

It is an amenable number.

731131241 is a deficient number, since it is larger than the sum of its proper divisors (1).

731131241 is an equidigital number, since it uses as much as digits as its factorization.

731131241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 731131241 is about 27039.4386221312. The cubic root of 731131241 is about 900.8762006021.

Adding to 731131241 its reverse (142131137), we get a palindrome (873262378).

The spelling of 731131241 in words is "seven hundred thirty-one million, one hundred thirty-one thousand, two hundred forty-one".