743256313 has 2 divisors, whose sum is σ = 743256314. Its totient is φ = 743256312.

The previous prime is 743256299. The next prime is 743256331. The reversal of 743256313 is 313652347.

743256313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (743256331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471237264 + 272019049 = 21708^2 + 16493^2 .

It is an emirp because it is prime and its reverse (313652347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 743256313 - 2⁵ = 743256281 is a prime.

It is not a weakly prime, because it can be changed into another prime (143256313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371628156 + 371628157.

It is an arithmetic number, because the mean of its divisors is an integer number (371628157).

Almost surely, 2^743256313 is an apocalyptic number.

It is an amenable number.

743256313 is a deficient number, since it is larger than the sum of its proper divisors (1).

743256313 is an equidigital number, since it uses as much as digits as its factorization.

743256313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 34.

The square root of 743256313 is about 27262.7275414622. The cubic root of 743256313 is about 905.8289619740.

The spelling of 743256313 in words is "seven hundred forty-three million, two hundred fifty-six thousand, three hundred thirteen".