71232143 has 2 divisors, whose sum is σ = 71232144. Its totient is φ = 71232142.

The previous prime is 71232137. The next prime is 71232151. The reversal of 71232143 is 34123217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71232143 - 2¹⁴ = 71215759 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71232163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35616071 + 35616072.

It is an arithmetic number, because the mean of its divisors is an integer number (35616072).

Almost surely, 2^71232143 is an apocalyptic number.

71232143 is a deficient number, since it is larger than the sum of its proper divisors (1).

71232143 is an equidigital number, since it uses as much as digits as its factorization.

71232143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 71232143 is about 8439.9136843927. The cubic root of 71232143 is about 414.5325806231.

It can be divided in two parts, 7123214 and 3, that added together give a palindrome (7123217).

The spelling of 71232143 in words is "seventy-one million, two hundred thirty-two thousand, one hundred forty-three".