1305223417 has 4 divisors (see below), whose sum is σ = 1332994176. Its totient is φ = 1277452660.

The previous prime is 1305223393. The next prime is 1305223453. The reversal of 1305223417 is 7143225031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305223417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305223457) 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, 13885309 + ... + 13885402.

It is an arithmetic number, because the mean of its divisors is an integer number (333248544).

Almost surely, 2^1305223417 is an apocalyptic number.

It is an amenable number.

1305223417 is a deficient number, since it is larger than the sum of its proper divisors (27770759).

1305223417 is an equidigital number, since it uses as much as digits as its factorization.

1305223417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27770758.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1305223417 is about 36127.8758993661. The cubic root of 1305223417 is about 1092.8526732767.

Adding to 1305223417 its reverse (7143225031), we get a palindrome (8448448448).

The spelling of 1305223417 in words is "one billion, three hundred five million, two hundred twenty-three thousand, four hundred seventeen".