1223723 has 2 divisors, whose sum is σ = 1223724. Its totient is φ = 1223722.

The previous prime is 1223693. The next prime is 1223731. The reversal of 1223723 is 3273221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223723 - 2¹⁶ = 1158187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223695 and 1223704.

It is not a weakly prime, because it can be changed into another prime (1223753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611861 + 611862.

It is an arithmetic number, because the mean of its divisors is an integer number (611862).

2^1223723 is an apocalyptic number.

1223723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223723 is an equidigital number, since it uses as much as digits as its factorization.

1223723 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 1223723 is about 1106.2201408400. The cubic root of 1223723 is about 106.9615548843.

Adding to 1223723 its reverse (3273221), we get a palindrome (4496944).

The spelling of 1223723 in words is "one million, two hundred twenty-three thousand, seven hundred twenty-three".