71323141 has 2 divisors, whose sum is σ = 71323142. Its totient is φ = 71323140.

The previous prime is 71323123. The next prime is 71323193. The reversal of 71323141 is 14132317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55442916 + 15880225 = 7446^2 + 3985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71323141 is a prime.

It is equal to p_4191250 and since 71323141 and 4191250 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71323741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35661570 + 35661571.

It is an arithmetic number, because the mean of its divisors is an integer number (35661571).

Almost surely, 2^71323141 is an apocalyptic number.

It is an amenable number.

71323141 is a deficient number, since it is larger than the sum of its proper divisors (1).

71323141 is an equidigital number, since it uses as much as digits as its factorization.

71323141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 71323141 is about 8445.3028956930. The cubic root of 71323141 is about 414.7090252385.

Adding to 71323141 its reverse (14132317), we get a palindrome (85455458).

The spelling of 71323141 in words is "seventy-one million, three hundred twenty-three thousand, one hundred forty-one".