723336520913 has 2 divisors, whose sum is σ = 723336520914. Its totient is φ = 723336520912.

The previous prime is 723336520901. The next prime is 723336520961. The reversal of 723336520913 is 319025633327.

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., 659485295569 + 63851225344 = 812087^2 + 252688^2 .

It is a cyclic number.

It is not a de Polignac number, because 723336520913 - 2⁴ = 723336520897 is a prime.

It is not a weakly prime, because it can be changed into another prime (723336525913) 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, 361668260456 + 361668260457.

It is an arithmetic number, because the mean of its divisors is an integer number (361668260457).

Almost surely, 2^723336520913 is an apocalyptic number.

It is an amenable number.

723336520913 is a deficient number, since it is larger than the sum of its proper divisors (1).

723336520913 is an equidigital number, since it uses as much as digits as its factorization.

723336520913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 44.

The spelling of 723336520913 in words is "seven hundred twenty-three billion, three hundred thirty-six million, five hundred twenty thousand, nine hundred thirteen".