743438313 has 6 divisors (see below), whose sum is σ = 1073855354. Its totient is φ = 495625536.

The previous prime is 743438243. The next prime is 743438323. The reversal of 743438313 is 313834347.

It can be written as a sum of positive squares in only one way, i.e., 453178944 + 290259369 = 21288^2 + 17037^2 .

It is not a de Polignac number, because 743438313 - 2²⁰ = 742389737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (743438323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41302120 + ... + 41302137.

Almost surely, 2^743438313 is an apocalyptic number.

It is an amenable number.

743438313 is a deficient number, since it is larger than the sum of its proper divisors (330417041).

743438313 is a wasteful number, since it uses less digits than its factorization.

743438313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82604263 (or 82604260 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 743438313 is about 27266.0652276782. The cubic root of 743438313 is about 905.9028922425.

The spelling of 743438313 in words is "seven hundred forty-three million, four hundred thirty-eight thousand, three hundred thirteen".