2143212031 has 2 divisors, whose sum is σ = 2143212032. Its totient is φ = 2143212030.

The previous prime is 2143211999. The next prime is 2143212047. The reversal of 2143212031 is 1302123412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2143212031 - 2⁵ = 2143211999 is a prime.

It is a super-2 number, since 2×2143212031² = 9186715619646289922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143212431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071606015 + 1071606016.

It is an arithmetic number, because the mean of its divisors is an integer number (1071606016).

Almost surely, 2^2143212031 is an apocalyptic number.

2143212031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143212031 is an equidigital number, since it uses as much as digits as its factorization.

2143212031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2143212031 is about 46294.8380599825. The cubic root of 2143212031 is about 1289.3031572834.

Adding to 2143212031 its reverse (1302123412), we get a palindrome (3445335443).

The spelling of 2143212031 in words is "two billion, one hundred forty-three million, two hundred twelve thousand, thirty-one".