723242231 has 2 divisors, whose sum is σ = 723242232. Its totient is φ = 723242230.

The previous prime is 723242209. The next prime is 723242257. The reversal of 723242231 is 132242327.

It is a happy number.

It is an a-pointer prime, because the next prime (723242257) can be obtained adding 723242231 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 723242231 - 2⁶ = 723242167 is a prime.

It is a super-2 number, since 2×723242231² = 1046158649403714722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 723242231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723242131) 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 as a sum of consecutive naturals, namely, 361621115 + 361621116.

It is an arithmetic number, because the mean of its divisors is an integer number (361621116).

Almost surely, 2^723242231 is an apocalyptic number.

723242231 is a deficient number, since it is larger than the sum of its proper divisors (1).

723242231 is an equidigital number, since it uses as much as digits as its factorization.

723242231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 26.

The square root of 723242231 is about 26893.1632761934. The cubic root of 723242231 is about 897.6242821040.

Adding to 723242231 its reverse (132242327), we get a palindrome (855484558).

The spelling of 723242231 in words is "seven hundred twenty-three million, two hundred forty-two thousand, two hundred thirty-one".