2143420031 has 2 divisors, whose sum is σ = 2143420032. Its totient is φ = 2143420030.

The previous prime is 2143419989. The next prime is 2143420043. The reversal of 2143420031 is 1300243412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143420031 is a prime.

It is a super-2 number, since 2×2143420031² = 9188498858584081922, 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 = 2143419985 and 2143420012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143420831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071710015 + 1071710016.

It is an arithmetic number, because the mean of its divisors is an integer number (1071710016).

Almost surely, 2^2143420031 is an apocalyptic number.

2143420031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143420031 is an equidigital number, since it uses as much as digits as its factorization.

2143420031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2143420031 is about 46297.0844762389. The cubic root of 2143420031 is about 1289.3448651465.

Adding to 2143420031 its reverse (1300243412), we get a palindrome (3443663443).

The spelling of 2143420031 in words is "two billion, one hundred forty-three million, four hundred twenty thousand, thirty-one".