723762967321 has 2 divisors, whose sum is σ = 723762967322. Its totient is φ = 723762967320.

The previous prime is 723762967303. The next prime is 723762967379. The reversal of 723762967321 is 123769267327.

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., 709745591296 + 14017376025 = 842464^2 + 118395^2 .

It is an emirp because it is prime and its reverse (123769267327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723762967321 - 2²³ = 723754578713 is a prime.

It is not a weakly prime, because it can be changed into another prime (723762967391) 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 as a sum of consecutive naturals, namely, 361881483660 + 361881483661.

It is an arithmetic number, because the mean of its divisors is an integer number (361881483661).

Almost surely, 2^723762967321 is an apocalyptic number.

It is an amenable number.

723762967321 is a deficient number, since it is larger than the sum of its proper divisors (1).

723762967321 is an equidigital number, since it uses as much as digits as its factorization.

723762967321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 55.

The spelling of 723762967321 in words is "seven hundred twenty-three billion, seven hundred sixty-two million, nine hundred sixty-seven thousand, three hundred twenty-one".