1310723 has 2 divisors, whose sum is σ = 1310724. Its totient is φ = 1310722.

The previous prime is 1310719. The next prime is 1310741. The reversal of 1310723 is 3270131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1310723 - 2² = 1310719 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1310123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655361 + 655362.

It is an arithmetic number, because the mean of its divisors is an integer number (655362).

2^1310723 is an apocalyptic number.

1310723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310723 is an equidigital number, since it uses as much as digits as its factorization.

1310723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1310723 is about 1144.8681146752. The cubic root of 1310723 is about 109.4385440822.

Adding to 1310723 its reverse (3270131), we get a palindrome (4580854).

The spelling of 1310723 in words is "one million, three hundred ten thousand, seven hundred twenty-three".