1316803128 has 64 divisors (see below), whose sum is σ = 3322598400. Its totient is φ = 434878080.

The previous prime is 1316803121. The next prime is 1316803139. The reversal of 1316803128 is 8213086131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316803121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444993 + ... + 1445903.

It is an arithmetic number, because the mean of its divisors is an integer number (51915600).

Almost surely, 2^1316803128 is an apocalyptic number.

It is an amenable number.

1316803128 is an abundant number, since it is smaller than the sum of its proper divisors (2005795272).

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

1316803128 is a wasteful number, since it uses less digits than its factorization.

1316803128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1316803128 is about 36287.7820760652. The cubic root of 1316803128 is about 1096.0750277194.

Adding to 1316803128 its reverse (8213086131), we get a palindrome (9529889259).

The spelling of 1316803128 in words is "one billion, three hundred sixteen million, eight hundred three thousand, one hundred twenty-eight".