1345723 has 4 divisors (see below), whose sum is σ = 1371168. Its totient is φ = 1320280.

The previous prime is 1345711. The next prime is 1345733. The reversal of 1345723 is 3275431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3275431 = 241 ⋅13591.

It is a cyclic number.

It is not a de Polignac number, because 1345723 - 2⁵ = 1345691 is a prime.

It is a Duffinian number.

1345723 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1345733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12643 + ... + 12748.

It is an arithmetic number, because the mean of its divisors is an integer number (342792).

2^1345723 is an apocalyptic number.

1345723 is a deficient number, since it is larger than the sum of its proper divisors (25445).

1345723 is an equidigital number, since it uses as much as digits as its factorization.

1345723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25444.

The product of its digits is 2520, while the sum is 25.

The square root of 1345723 is about 1160.0530160299. The cubic root of 1345723 is about 110.4041059087.

The spelling of 1345723 in words is "one million, three hundred forty-five thousand, seven hundred twenty-three".