1320813308 has 24 divisors (see below), whose sum is σ = 2330262144. Its totient is φ = 655038000.

The previous prime is 1320813293. The next prime is 1320813337. The reversal of 1320813308 is 8033180231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546623 + ... + 549033.

It is an arithmetic number, because the mean of its divisors is an integer number (97094256).

Almost surely, 2^1320813308 is an apocalyptic number.

It is an amenable number.

1320813308 is a deficient number, since it is larger than the sum of its proper divisors (1009448836).

1320813308 is a wasteful number, since it uses less digits than its factorization.

1320813308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1320813308 is about 36342.9953085873. The cubic root of 1320813308 is about 1097.1865590315.

Adding to 1320813308 its reverse (8033180231), we get a palindrome (9353993539).

The spelling of 1320813308 in words is "one billion, three hundred twenty million, eight hundred thirteen thousand, three hundred eight".