1312322208 has 48 divisors (see below), whose sum is σ = 3647488320. Its totient is φ = 411708416.

The previous prime is 1312322171. The next prime is 1312322243. The reversal of 1312322208 is 8022232131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400428 + ... + 403691.

It is an arithmetic number, because the mean of its divisors is an integer number (75989340).

Almost surely, 2^1312322208 is an apocalyptic number.

It is an amenable number.

1312322208 is an abundant number, since it is smaller than the sum of its proper divisors (2335166112).

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

1312322208 is a wasteful number, since it uses less digits than its factorization.

1312322208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804149 (or 804141 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1312322208 is about 36225.9880196524. The cubic root of 1312322208 is about 1094.8303450591.

Adding to 1312322208 its reverse (8022232131), we get a palindrome (9334554339).

The spelling of 1312322208 in words is "one billion, three hundred twelve million, three hundred twenty-two thousand, two hundred eight".