1722323 has 2 divisors, whose sum is σ = 1722324. Its totient is φ = 1722322.

The previous prime is 1722319. The next prime is 1722359. The reversal of 1722323 is 3232271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1722323 - 2² = 1722319 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1722295 and 1722304.

It is not a weakly prime, because it can be changed into another prime (1722373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861161 + 861162.

It is an arithmetic number, because the mean of its divisors is an integer number (861162).

2^1722323 is an apocalyptic number.

1722323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722323 is an equidigital number, since it uses as much as digits as its factorization.

1722323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 20.

The square root of 1722323 is about 1312.3730414787. The cubic root of 1722323 is about 119.8684437904.

Adding to 1722323 its reverse (3232271), we get a palindrome (4954594).

The spelling of 1722323 in words is "one million, seven hundred twenty-two thousand, three hundred twenty-three".