2108085831 has 10 divisors (see below), whose sum is σ = 3149115992. Its totient is φ = 1405390500.

The previous prime is 2108085797. The next prime is 2108085857. The reversal of 2108085831 is 1385808012.

It is not a de Polignac number, because 2108085831 - 2¹⁷ = 2107954759 is a prime.

It is a super-2 number, since 2×2108085831² = 8888051741725921122, which 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 (2108084831) 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 9 ways as a sum of consecutive naturals, for example, 13012795 + ... + 13012956.

Almost surely, 2^2108085831 is an apocalyptic number.

2108085831 is a deficient number, since it is larger than the sum of its proper divisors (1041030161).

2108085831 is an equidigital number, since it uses as much as digits as its factorization.

2108085831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26025763 (or 26025754 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 2108085831 is about 45913.8958377526. The cubic root of 2108085831 is about 1282.2206388549.

The spelling of 2108085831 in words is "two billion, one hundred eight million, eighty-five thousand, eight hundred thirty-one".