1031782731828 has 48 divisors (see below), whose sum is σ = 2438785789440. Its totient is φ = 339478941024.

The previous prime is 1031782731827. The next prime is 1031782731919. The reversal of 1031782731828 is 8281372871301.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031782731827) 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, 980118 + ... + 1739021.

It is an arithmetic number, because the mean of its divisors is an integer number (50808037280).

Almost surely, 2^{1031782731828} is an apocalyptic number.

It is an amenable number.

1031782731828 is an abundant number, since it is smaller than the sum of its proper divisors (1407003057612).

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

1031782731828 is a wasteful number, since it uses less digits than its factorization.

1031782731828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719556 (or 2719554 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The spelling of 1031782731828 in words is "one trillion, thirty-one billion, seven hundred eighty-two million, seven hundred thirty-one thousand, eight hundred twenty-eight".