1319723 has 2 divisors, whose sum is σ = 1319724. Its totient is φ = 1319722.

The previous prime is 1319719. The next prime is 1319729. The reversal of 1319723 is 3279131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3279131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1319723 - 2² = 1319719 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1319692 and 1319701.

It is not a weakly prime, because it can be changed into another prime (1319729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659861 + 659862.

It is an arithmetic number, because the mean of its divisors is an integer number (659862).

2^1319723 is an apocalyptic number.

1319723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319723 is an equidigital number, since it uses as much as digits as its factorization.

1319723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 1319723 is about 1148.7919742059. The cubic root of 1319723 is about 109.6884573229.

The spelling of 1319723 in words is "one million, three hundred nineteen thousand, seven hundred twenty-three".