723320023 has 4 divisors (see below), whose sum is σ = 723481768. Its totient is φ = 723158280.

The previous prime is 723319981. The next prime is 723320033. The reversal of 723320023 is 320023327.

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

It is a cyclic number.

It is not a de Polignac number, because 723320023 - 2⁹ = 723319511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 723319976 and 723320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723320033) 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 in 3 ways as a sum of consecutive naturals, for example, 73968 + ... + 83173.

It is an arithmetic number, because the mean of its divisors is an integer number (180870442).

Almost surely, 2^723320023 is an apocalyptic number.

723320023 is a deficient number, since it is larger than the sum of its proper divisors (161745).

723320023 is a wasteful number, since it uses less digits than its factorization.

723320023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161744.

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 723320023 is about 26894.6095528453. The cubic root of 723320023 is about 897.6564638000.

The spelling of 723320023 in words is "seven hundred twenty-three million, three hundred twenty thousand, twenty-three".