1375723 has 2 divisors, whose sum is σ = 1375724. Its totient is φ = 1375722.

The previous prime is 1375709. The next prime is 1375727. The reversal of 1375723 is 3275731.

It is a strong prime.

It is an emirp because it is prime and its reverse (3275731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1375723 - 2⁹ = 1375211 is a prime.

It is a super-2 number, since 2×1375723² = 3785227545458, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1375691 and 1375700.

It is not a weakly prime, because it can be changed into another prime (1375727) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687861 + 687862.

It is an arithmetic number, because the mean of its divisors is an integer number (687862).

2^1375723 is an apocalyptic number.

1375723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375723 is an equidigital number, since it uses as much as digits as its factorization.

1375723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4410, while the sum is 28.

The square root of 1375723 is about 1172.9121876765. The cubic root of 1375723 is about 111.2184912662.

The spelling of 1375723 in words is "one million, three hundred seventy-five thousand, seven hundred twenty-three".