2143431441 has 12 divisors (see below), whose sum is σ = 3202828980. Its totient is φ = 1379679840.

The previous prime is 2143431403. The next prime is 2143431457. The reversal of 2143431441 is 1441343412.

2143431441 is a `hidden beast` number, since 214 + 3 + 4 + 3 + 1 + 441 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 379431441 + 1764000000 = 19479^2 + 42000^2 .

It is not a de Polignac number, because 2143431441 - 2⁶ = 2143431377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143431491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4105930 + ... + 4106451.

It is an arithmetic number, because the mean of its divisors is an integer number (266902415).

Almost surely, 2^2143431441 is an apocalyptic number.

It is an amenable number.

2143431441 is a deficient number, since it is larger than the sum of its proper divisors (1059397539).

2143431441 is a wasteful number, since it uses less digits than its factorization.

2143431441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8212416 (or 8212413 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2143431441 is about 46297.2077019770. The cubic root of 2143431441 is about 1289.3471529853.

Adding to 2143431441 its reverse (1441343412), we get a palindrome (3584774853).

The spelling of 2143431441 in words is "two billion, one hundred forty-three million, four hundred thirty-one thousand, four hundred forty-one".