723522101 has 2 divisors, whose sum is σ = 723522102. Its totient is φ = 723522100.

The previous prime is 723522083. The next prime is 723522119. The reversal of 723522101 is 101225327.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (723522083) and next prime (723522119).

It can be written as a sum of positive squares in only one way, i.e., 377524900 + 345997201 = 19430^2 + 18601^2 .

It is a cyclic number.

It is not a de Polignac number, because 723522101 - 2²² = 719327797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723522001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361761050 + 361761051.

It is an arithmetic number, because the mean of its divisors is an integer number (361761051).

Almost surely, 2^723522101 is an apocalyptic number.

It is an amenable number.

723522101 is a deficient number, since it is larger than the sum of its proper divisors (1).

723522101 is an equidigital number, since it uses as much as digits as its factorization.

723522101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 723522101 is about 26898.3661399721. The cubic root of 723522101 is about 897.7400504684.

Adding to 723522101 its reverse (101225327), we get a palindrome (824747428).

The spelling of 723522101 in words is "seven hundred twenty-three million, five hundred twenty-two thousand, one hundred one".