1321103308 has 36 divisors (see below), whose sum is σ = 2692531800. Its totient is φ = 565525632.

The previous prime is 1321103297. The next prime is 1321103309. The reversal of 1321103308 is 8033011231.

It is not an unprimeable number, because it can be changed into a prime (1321103309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188043 + ... + 194941.

It is an arithmetic number, because the mean of its divisors is an integer number (74792550).

Almost surely, 2^1321103308 is an apocalyptic number.

It is an amenable number.

1321103308 is an abundant number, since it is smaller than the sum of its proper divisors (1371428492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321103308 is a wasteful number, since it uses less digits than its factorization.

1321103308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894 (or 7885 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1321103308 is about 36346.9848543177. The cubic root of 1321103308 is about 1097.2668531998.

Adding to 1321103308 its reverse (8033011231), we get a palindrome (9354114539).

The spelling of 1321103308 in words is "one billion, three hundred twenty-one million, one hundred three thousand, three hundred eight".