1312807748 has 12 divisors (see below), whose sum is σ = 2625615552. Its totient is φ = 562631880.

The previous prime is 1312807733. The next prime is 1312807751. The reversal of 1312807748 is 8477082131.

1312807748 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23442968 + ... + 23443023.

It is an arithmetic number, because the mean of its divisors is an integer number (218801296).

Almost surely, 2^1312807748 is an apocalyptic number.

It is an amenable number.

1312807748 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1312807748 is a wasteful number, since it uses less digits than its factorization.

1312807748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46886002 (or 46886000 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1312807748 is about 36232.6889424453. The cubic root of 1312807748 is about 1094.9653521421.

Adding to 1312807748 its reverse (8477082131), we get a palindrome (9789889879).

The spelling of 1312807748 in words is "one billion, three hundred twelve million, eight hundred seven thousand, seven hundred forty-eight".