723316501 has 4 divisors (see below), whose sum is σ = 725785452. Its totient is φ = 720847552.

The previous prime is 723316483. The next prime is 723316507. The reversal of 723316501 is 105613327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 496844100 + 226472401 = 22290^2 + 15049^2 .

It is a cyclic number.

It is not a de Polignac number, because 723316501 - 2²⁵ = 689762069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 723316501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723316507) 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 in 3 ways as a sum of consecutive naturals, for example, 1234036 + ... + 1234621.

It is an arithmetic number, because the mean of its divisors is an integer number (181446363).

Almost surely, 2^723316501 is an apocalyptic number.

It is an amenable number.

723316501 is a deficient number, since it is larger than the sum of its proper divisors (2468951).

723316501 is a wasteful number, since it uses less digits than its factorization.

723316501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468950.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 723316501 is about 26894.5440749606. The cubic root of 723316501 is about 897.6550068371.

Adding to 723316501 its reverse (105613327), we get a palindrome (828929828).

The spelling of 723316501 in words is "seven hundred twenty-three million, three hundred sixteen thousand, five hundred one".