6400432311 has 32 divisors (see below), whose sum is σ = 10507811328. Its totient is φ = 3374593920.

The previous prime is 6400432279. The next prime is 6400432331. The reversal of 6400432311 is 1132340046.

It is not a de Polignac number, because 6400432311 - 2⁵ = 6400432279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400432331) 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 31 ways as a sum of consecutive naturals, for example, 974340 + ... + 980886.

It is an arithmetic number, because the mean of its divisors is an integer number (328369104).

Almost surely, 2^6400432311 is an apocalyptic number.

6400432311 is a deficient number, since it is larger than the sum of its proper divisors (4107379017).

6400432311 is a wasteful number, since it uses less digits than its factorization.

6400432311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6400432311 is about 80002.7018981234. The cubic root of 6400432311 is about 1856.6773368770.

Adding to 6400432311 its reverse (1132340046), we get a palindrome (7532772357).

The spelling of 6400432311 in words is "six billion, four hundred million, four hundred thirty-two thousand, three hundred eleven".