723317429 has 2 divisors, whose sum is σ = 723317430. Its totient is φ = 723317428.

The previous prime is 723317381. The next prime is 723317431. The reversal of 723317429 is 924713327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658948900 + 64368529 = 25670^2 + 8023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723317429 is a prime.

Together with 723317431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 723317392 and 723317401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723317489) 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, 361658714 + 361658715.

It is an arithmetic number, because the mean of its divisors is an integer number (361658715).

Almost surely, 2^723317429 is an apocalyptic number.

It is an amenable number.

723317429 is a deficient number, since it is larger than the sum of its proper divisors (1).

723317429 is an equidigital number, since it uses as much as digits as its factorization.

723317429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 723317429 is about 26894.5613275249. The cubic root of 723317429 is about 897.6553907278.

The spelling of 723317429 in words is "seven hundred twenty-three million, three hundred seventeen thousand, four hundred twenty-nine".