2143412231 has 2 divisors, whose sum is σ = 2143412232. Its totient is φ = 2143412230.

The previous prime is 2143412213. The next prime is 2143412237. The reversal of 2143412231 is 1322143412.

Together with previous prime (2143412213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143412231 is a prime.

It is a super-2 number, since 2×2143412231² = 9188431984000794722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2143412197 and 2143412206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143412237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071706115 + 1071706116.

It is an arithmetic number, because the mean of its divisors is an integer number (1071706116).

Almost surely, 2^2143412231 is an apocalyptic number.

2143412231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143412231 is an equidigital number, since it uses as much as digits as its factorization.

2143412231 is an evil number, because the sum of its binary digits is even.

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

The square root of 2143412231 is about 46297.0002375964. Note that the first 3 decimals coincide. The cubic root of 2143412231 is about 1289.3433011503.

Adding to 2143412231 its reverse (1322143412), we get a palindrome (3465555643).

The spelling of 2143412231 in words is "two billion, one hundred forty-three million, four hundred twelve thousand, two hundred thirty-one".