1331128080 has 100 divisors (see below), whose sum is σ = 4623227532. Its totient is φ = 354965760.

The previous prime is 1331128027. The next prime is 1331128091. The reversal of 1331128080 is 808211331.

It can be written as a sum of positive squares in 2 ways, for example, as 837755136 + 493372944 = 28944^2 + 22212^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96231 + ... + 109190.

Almost surely, 2^1331128080 is an apocalyptic number.

1331128080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331128080 is an abundant number, since it is smaller than the sum of its proper divisors (3292099452).

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

1331128080 is a wasteful number, since it uses less digits than its factorization.

1331128080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205446 (or 205431 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1331128080 is about 36484.6279959108. The cubic root of 1331128080 is about 1100.0352826149.

The spelling of 1331128080 in words is "one billion, three hundred thirty-one million, one hundred twenty-eight thousand, eighty".