6400326831 has 16 divisors (see below), whose sum is σ = 8557432800. Its totient is φ = 4255072128.

The previous prime is 6400326827. The next prime is 6400326869. The reversal of 6400326831 is 1386230046.

It is not a de Polignac number, because 6400326831 - 2² = 6400326827 is a prime.

It is a super-2 number, since 2×6400326831² = 81928367087237005122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6400326792 and 6400326801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400326131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1980525 + ... + 1983753.

It is an arithmetic number, because the mean of its divisors is an integer number (534839550).

Almost surely, 2^6400326831 is an apocalyptic number.

6400326831 is a deficient number, since it is larger than the sum of its proper divisors (2157105969).

6400326831 is a wasteful number, since it uses less digits than its factorization.

6400326831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 6400326831 is about 80002.0426676719. The cubic root of 6400326831 is about 1856.6671373888.

Adding to 6400326831 its reverse (1386230046), we get a palindrome (7786556877).

The spelling of 6400326831 in words is "six billion, four hundred million, three hundred twenty-six thousand, eight hundred thirty-one".