1321322308 has 12 divisors (see below), whose sum is σ = 2412849600. Its totient is φ = 631936712.

The previous prime is 1321322291. The next prime is 1321322309. The reversal of 1321322308 is 8032231231.

It is not an unprimeable number, because it can be changed into a prime (1321322309) 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, 7181008 + ... + 7181191.

It is an arithmetic number, because the mean of its divisors is an integer number (201070800).

Almost surely, 2^1321322308 is an apocalyptic number.

It is an amenable number.

1321322308 is a deficient number, since it is larger than the sum of its proper divisors (1091527292).

1321322308 is a wasteful number, since it uses less digits than its factorization.

1321322308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14362226 (or 14362224 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1321322308 is about 36349.9973590095. The cubic root of 1321322308 is about 1097.3274813536.

Adding to 1321322308 its reverse (8032231231), we get a palindrome (9353553539).

The spelling of 1321322308 in words is "one billion, three hundred twenty-one million, three hundred twenty-two thousand, three hundred eight".