2143041431 has 4 divisors (see below), whose sum is σ = 2175027192. Its totient is φ = 2111055672.

The previous prime is 2143041427. The next prime is 2143041457. The reversal of 2143041431 is 1341403412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2143041431 - 2² = 2143041427 is a prime.

It is a super-2 number, since 2×2143041431² = 9185253149965055522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143041397 and 2143041406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143041401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15992780 + ... + 15992913.

It is an arithmetic number, because the mean of its divisors is an integer number (543756798).

Almost surely, 2^2143041431 is an apocalyptic number.

2143041431 is a deficient number, since it is larger than the sum of its proper divisors (31985761).

2143041431 is an equidigital number, since it uses as much as digits as its factorization.

2143041431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31985760.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2143041431 is about 46292.9954852783. The cubic root of 2143041431 is about 1289.2689468006.

Adding to 2143041431 its reverse (1341403412), we get a palindrome (3484444843).

The spelling of 2143041431 in words is "two billion, one hundred forty-three million, forty-one thousand, four hundred thirty-one".