71371387 has 2 divisors, whose sum is σ = 71371388. Its totient is φ = 71371386.

The previous prime is 71371381. The next prime is 71371397. The reversal of 71371387 is 78317317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71371387 - 2³ = 71371379 is a prime.

It is not a weakly prime, because it can be changed into another prime (71371381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35685693 + 35685694.

It is an arithmetic number, because the mean of its divisors is an integer number (35685694).

Almost surely, 2^71371387 is an apocalyptic number.

71371387 is a deficient number, since it is larger than the sum of its proper divisors (1).

71371387 is an equidigital number, since it uses as much as digits as its factorization.

71371387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 37.

The square root of 71371387 is about 8448.1587934887. The cubic root of 71371387 is about 414.8025130911.

The spelling of 71371387 in words is "seventy-one million, three hundred seventy-one thousand, three hundred eighty-seven".