6443142831 has 24 divisors (see below), whose sum is σ = 9645692160. Its totient is φ = 4139553600.

The previous prime is 6443142809. The next prime is 6443142847. The reversal of 6443142831 is 1382413446.

6443142831 is a `hidden beast` number, since 64 + 4 + 314 + 283 + 1 = 666.

It is not a de Polignac number, because 6443142831 - 2¹⁰ = 6443141807 is a prime.

It is a super-2 number, since 2×6443142831² = 83028179081333389122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443142131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118386 + ... + 164016.

It is an arithmetic number, because the mean of its divisors is an integer number (401903840).

Almost surely, 2^6443142831 is an apocalyptic number.

6443142831 is a deficient number, since it is larger than the sum of its proper divisors (3202549329).

6443142831 is a wasteful number, since it uses less digits than its factorization.

6443142831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46207 (or 46204 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 6443142831 is about 80269.1897990755. The cubic root of 6443142831 is about 1860.7980957599.

The spelling of 6443142831 in words is "six billion, four hundred forty-three million, one hundred forty-two thousand, eight hundred thirty-one".