6881386231 has 18 divisors (see below), whose sum is σ = 7280684768. Its totient is φ = 6497155920.

The previous prime is 6881386223. The next prime is 6881386339. The reversal of 6881386231 is 1326831886.

It is not a de Polignac number, because 6881386231 - 2³ = 6881386223 is a prime.

It is a super-2 number, since 2×6881386231² = 94706952920392770722, 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 (6881386201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21707685 + ... + 21708001.

Almost surely, 2^6881386231 is an apocalyptic number.

6881386231 is a deficient number, since it is larger than the sum of its proper divisors (399298537).

6881386231 is an frugal number, since it uses more digits than its factorization.

6881386231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 395 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 6881386231 is about 82954.1212418045. The cubic root of 6881386231 is about 1902.0648126062.

The spelling of 6881386231 in words is "six billion, eight hundred eighty-one million, three hundred eighty-six thousand, two hundred thirty-one".