1312753128 has 64 divisors (see below), whose sum is σ = 3325071360. Its totient is φ = 431856576.

The previous prime is 1312753103. The next prime is 1312753159. The reversal of 1312753128 is 8213572131.

It is a happy 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, 906501 + ... + 907947.

It is an arithmetic number, because the mean of its divisors is an integer number (51954240).

Almost surely, 2^1312753128 is an apocalyptic number.

It is an amenable number.

1312753128 is an abundant number, since it is smaller than the sum of its proper divisors (2012318232).

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

1312753128 is a wasteful number, since it uses less digits than its factorization.

1312753128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 1922 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 1312753128 is about 36231.9351953494. The cubic root of 1312753128 is about 1094.9501664108.

The spelling of 1312753128 in words is "one billion, three hundred twelve million, seven hundred fifty-three thousand, one hundred twenty-eight".