1305223312 has 20 divisors (see below), whose sum is σ = 2545847100. Its totient is φ = 648230528.

The previous prime is 1305223301. The next prime is 1305223357. The reversal of 1305223312 is 2133225031.

It can be written as a sum of positive squares in 2 ways, for example, as 370331536 + 934891776 = 19244^2 + 30576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271363 + ... + 276130.

It is an arithmetic number, because the mean of its divisors is an integer number (127292355).

Almost surely, 2^1305223312 is an apocalyptic number.

It is an amenable number.

1305223312 is a deficient number, since it is larger than the sum of its proper divisors (1240623788).

1305223312 is a wasteful number, since it uses less digits than its factorization.

1305223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547650 (or 547644 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1305223312 is about 36127.8744461946. The cubic root of 1305223312 is about 1092.8526439715.

Adding to 1305223312 its reverse (2133225031), we get a palindrome (3438448343).

The spelling of 1305223312 in words is "one billion, three hundred five million, two hundred twenty-three thousand, three hundred twelve".