723433441 has 2 divisors, whose sum is σ = 723433442. Its totient is φ = 723433440.

The previous prime is 723433439. The next prime is 723433463. The reversal of 723433441 is 144334327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723341025 + 92416 = 26895^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 723433441 - 2¹ = 723433439 is a prime.

Together with 723433439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (723430441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361716720 + 361716721.

It is an arithmetic number, because the mean of its divisors is an integer number (361716721).

Almost surely, 2^723433441 is an apocalyptic number.

It is an amenable number.

723433441 is a deficient number, since it is larger than the sum of its proper divisors (1).

723433441 is an equidigital number, since it uses as much as digits as its factorization.

723433441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 31.

The square root of 723433441 is about 26896.7180339907. The cubic root of 723433441 is about 897.7033794466.

Adding to 723433441 its reverse (144334327), we get a palindrome (867767768).

The spelling of 723433441 in words is "seven hundred twenty-three million, four hundred thirty-three thousand, four hundred forty-one".