2143113431 has 2 divisors, whose sum is σ = 2143113432. Its totient is φ = 2143113430.

The previous prime is 2143113409. The next prime is 2143113433. The reversal of 2143113431 is 1343113412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2143113431 - 2⁶ = 2143113367 is a prime.

It is a super-2 number, since 2×2143113431² = 9185870356265183522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2143113433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143113397 and 2143113406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143113433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071556715 + 1071556716.

It is an arithmetic number, because the mean of its divisors is an integer number (1071556716).

Almost surely, 2^2143113431 is an apocalyptic number.

2143113431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143113431 is an equidigital number, since it uses as much as digits as its factorization.

2143113431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 2143113431 is about 46293.7731341916. The cubic root of 2143113431 is about 1289.2833852094.

Adding to 2143113431 its reverse (1343113412), we get a palindrome (3486226843).

The spelling of 2143113431 in words is "two billion, one hundred forty-three million, one hundred thirteen thousand, four hundred thirty-one".