712023721 has 2 divisors, whose sum is σ = 712023722. Its totient is φ = 712023720.

The previous prime is 712023709. The next prime is 712023737. The reversal of 712023721 is 127320217.

712023721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 684345600 + 27678121 = 26160^2 + 5261^2 .

It is a cyclic number.

It is not a de Polignac number, because 712023721 - 2⁹ = 712023209 is a prime.

It is not a weakly prime, because it can be changed into another prime (712021721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356011860 + 356011861.

It is an arithmetic number, because the mean of its divisors is an integer number (356011861).

Almost surely, 2^712023721 is an apocalyptic number.

It is an amenable number.

712023721 is a deficient number, since it is larger than the sum of its proper divisors (1).

712023721 is an equidigital number, since it uses as much as digits as its factorization.

712023721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 712023721 is about 26683.7726155804. The cubic root of 712023721 is about 892.9589355066.

Adding to 712023721 its reverse (127320217), we get a palindrome (839343938).

The spelling of 712023721 in words is "seven hundred twelve million, twenty-three thousand, seven hundred twenty-one".