6936387831 has 16 divisors (see below), whose sum is σ = 10526769120. Its totient is φ = 4511471040.

The previous prime is 6936387827. The next prime is 6936387833. The reversal of 6936387831 is 1387836396.

It is not a de Polignac number, because 6936387831 - 2² = 6936387827 is a prime.

It is a super-2 number, since 2×6936387831² = 96226952284089769122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6936387833) 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 15 ways as a sum of consecutive naturals, for example, 3131860 + ... + 3134073.

It is an arithmetic number, because the mean of its divisors is an integer number (657923070).

Almost surely, 2^6936387831 is an apocalyptic number.

6936387831 is a deficient number, since it is larger than the sum of its proper divisors (3590381289).

6936387831 is a wasteful number, since it uses less digits than its factorization.

6936387831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6265983 (or 6265977 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 6936387831 is about 83284.9796241795. The cubic root of 6936387831 is about 1907.1189838049.

The spelling of 6936387831 in words is "six billion, nine hundred thirty-six million, three hundred eighty-seven thousand, eight hundred thirty-one".