723320541 has 12 divisors (see below), whose sum is σ = 1046295900. Its totient is φ = 481521600.

The previous prime is 723320513. The next prime is 723320579. The reversal of 723320541 is 145023327.

723320541 is a `hidden beast` number, since 72 + 33 + 20 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 442892025 + 280428516 = 21045^2 + 16746^2 .

It is not a de Polignac number, because 723320541 - 2⁷ = 723320413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723320341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51016 + ... + 63633.

It is an arithmetic number, because the mean of its divisors is an integer number (87191325).

Almost surely, 2^723320541 is an apocalyptic number.

It is an amenable number.

723320541 is a deficient number, since it is larger than the sum of its proper divisors (322975359).

723320541 is a wasteful number, since it uses less digits than its factorization.

723320541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115356 (or 115353 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 723320541 is about 26894.6191830262. The cubic root of 723320541 is about 897.6566780831.

Adding to 723320541 its reverse (145023327), we get a palindrome (868343868).

The spelling of 723320541 in words is "seven hundred twenty-three million, three hundred twenty thousand, five hundred forty-one".