1305223 has 4 divisors (see below), whose sum is σ = 1318248. Its totient is φ = 1292200.

The previous prime is 1305169. The next prime is 1305229. The reversal of 1305223 is 3225031.

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-1305223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305197 and 1305206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305229) 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, 6361 + ... + 6562.

It is an arithmetic number, because the mean of its divisors is an integer number (329562).

2^1305223 is an apocalyptic number.

1305223 is a deficient number, since it is larger than the sum of its proper divisors (13025).

1305223 is a wasteful number, since it uses less digits than its factorization.

1305223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13024.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1305223 is about 1142.4635661587. The cubic root of 1305223 is about 109.2852556893.

The spelling of 1305223 in words is "one million, three hundred five thousand, two hundred twenty-three".