1312723 has 8 divisors (see below), whose sum is σ = 1428192. Its totient is φ = 1201536.

The previous prime is 1312681. The next prime is 1312733. The reversal of 1312723 is 3272131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312723 - 2⁹ = 1312211 is a prime.

It is a Duffinian number.

1312723 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312723.

It is not an unprimeable number, because it can be changed into a prime (1312733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 1672.

It is an arithmetic number, because the mean of its divisors is an integer number (178524).

2^1312723 is an apocalyptic number.

1312723 is a deficient number, since it is larger than the sum of its proper divisors (115469).

1312723 is a wasteful number, since it uses less digits than its factorization.

1312723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141.

The product of its digits is 252, while the sum is 19.

The square root of 1312723 is about 1145.7412447844. The cubic root of 1312723 is about 109.4941789890.

Adding to 1312723 its reverse (3272131), we get a palindrome (4584854).

The spelling of 1312723 in words is "one million, three hundred twelve thousand, seven hundred twenty-three".