1312304308 has 48 divisors (see below), whose sum is σ = 2704875264. Its totient is φ = 545322240.

The previous prime is 1312304299. The next prime is 1312304363. The reversal of 1312304308 is 8034032131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320160 + ... + 324232.

It is an arithmetic number, because the mean of its divisors is an integer number (56351568).

Almost surely, 2^1312304308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312304308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352437632).

1312304308 is an abundant number, since it is smaller than the sum of its proper divisors (1392570956).

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

1312304308 is a wasteful number, since it uses less digits than its factorization.

1312304308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432 (or 4430 counting only the distinct ones).

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

The square root of 1312304308 is about 36225.7409586057. The cubic root of 1312304308 is about 1094.8253672286.

Adding to 1312304308 its reverse (8034032131), we get a palindrome (9346336439).

The spelling of 1312304308 in words is "one billion, three hundred twelve million, three hundred four thousand, three hundred eight".