1312328304 has 140 divisors (see below), whose sum is σ = 4357082736. Its totient is φ = 374927616.

The previous prime is 1312328293. The next prime is 1312328317. The reversal of 1312328304 is 4038232131.

1312328304 is a `hidden beast` number, since 1 + 31 + 2 + 328 + 304 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 27 ways as a sum of consecutive naturals, for example, 73612 + ... + 89684.

Almost surely, 2^1312328304 is an apocalyptic number.

1312328304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312328304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178541368).

1312328304 is an abundant number, since it is smaller than the sum of its proper divisors (3044754432).

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

1312328304 is an equidigital number, since it uses as much as digits as its factorization.

1312328304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16106 (or 16085 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1312328304 is about 36226.0721580466. The cubic root of 1312328304 is about 1094.8320402920.

The spelling of 1312328304 in words is "one billion, three hundred twelve million, three hundred twenty-eight thousand, three hundred four".