1016880781831 has 12 divisors (see below), whose sum is σ = 1073523126000. Its totient is φ = 963086550048.

The previous prime is 1016880781823. The next prime is 1016880781867. The reversal of 1016880781831 is 1381870886101.

It is not a de Polignac number, because 1016880781831 - 2³ = 1016880781823 is a prime.

It is a super-2 number, since 2×1016880781831² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016880781331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874870 + ... + 1673068.

It is an arithmetic number, because the mean of its divisors is an integer number (89460260500).

Almost surely, 2^{1016880781831} is an apocalyptic number.

1016880781831 is a deficient number, since it is larger than the sum of its proper divisors (56642344169).

1016880781831 is an equidigital number, since it uses as much as digits as its factorization.

1016880781831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801766 (or 801747 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 52.

The spelling of 1016880781831 in words is "one trillion, sixteen billion, eight hundred eighty million, seven hundred eighty-one thousand, eight hundred thirty-one".