1131285108928 has 56 divisors (see below), whose sum is σ = 2418040841328. Its totient is φ = 522031635456.

The previous prime is 1131285108923. The next prime is 1131285108953. The reversal of 1131285108928 is 8298015821311.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1131285108923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4309575 + ... + 4564537.

It is an arithmetic number, because the mean of its divisors is an integer number (43179300738).

Almost surely, 2^{1131285108928} is an apocalyptic number.

It is an amenable number.

1131285108928 is an abundant number, since it is smaller than the sum of its proper divisors (1286755732400).

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

1131285108928 is a wasteful number, since it uses less digits than its factorization.

1131285108928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260321 (or 260311 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 49.

The spelling of 1131285108928 in words is "one trillion, one hundred thirty-one billion, two hundred eighty-five million, one hundred eight thousand, nine hundred twenty-eight".