2143432531 has 2 divisors, whose sum is σ = 2143432532. Its totient is φ = 2143432530.

The previous prime is 2143432517. The next prime is 2143432547. The reversal of 2143432531 is 1352343412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2143432531 - 2¹¹ = 2143430483 is a prime.

It is a super-2 number, since 2×2143432531² = 9188606029898131922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2143432531.

It is not a weakly prime, because it can be changed into another prime (2143432831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071716265 + 1071716266.

It is an arithmetic number, because the mean of its divisors is an integer number (1071716266).

Almost surely, 2^2143432531 is an apocalyptic number.

2143432531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143432531 is an equidigital number, since it uses as much as digits as its factorization.

2143432531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 2143432531 is about 46297.2194737438. The cubic root of 2143432531 is about 1289.3473715427.

Adding to 2143432531 its reverse (1352343412), we get a palindrome (3495775943).

The spelling of 2143432531 in words is "two billion, one hundred forty-three million, four hundred thirty-two thousand, five hundred thirty-one".