1318423 has 4 divisors (see below), whose sum is σ = 1349128. Its totient is φ = 1287720.

The previous prime is 1318411. The next prime is 1318441. The reversal of 1318423 is 3248131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1318423 is a prime.

It is a Duffinian number.

1318423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1318394 and 1318403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318463) 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, 15288 + ... + 15373.

It is an arithmetic number, because the mean of its divisors is an integer number (337282).

2^1318423 is an apocalyptic number.

1318423 is a deficient number, since it is larger than the sum of its proper divisors (30705).

1318423 is an equidigital number, since it uses as much as digits as its factorization.

1318423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30704.

The product of its digits is 576, while the sum is 22.

The square root of 1318423 is about 1148.2260230460. The cubic root of 1318423 is about 109.6524290954.

The spelling of 1318423 in words is "one million, three hundred eighteen thousand, four hundred twenty-three".