731342317 has 2 divisors, whose sum is σ = 731342318. Its totient is φ = 731342316.

The previous prime is 731342309. The next prime is 731342351. The reversal of 731342317 is 713243137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666362596 + 64979721 = 25814^2 + 8061^2 .

It is an emirp because it is prime and its reverse (713243137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 731342317 - 2³ = 731342309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731352317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365671158 + 365671159.

It is an arithmetic number, because the mean of its divisors is an integer number (365671159).

Almost surely, 2^731342317 is an apocalyptic number.

It is an amenable number.

731342317 is a deficient number, since it is larger than the sum of its proper divisors (1).

731342317 is an equidigital number, since it uses as much as digits as its factorization.

731342317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 31.

The square root of 731342317 is about 27043.3414540437. The cubic root of 731342317 is about 900.9628859276.

The spelling of 731342317 in words is "seven hundred thirty-one million, three hundred forty-two thousand, three hundred seventeen".