71330023 has 4 divisors (see below), whose sum is σ = 71408560. Its totient is φ = 71251488.

The previous prime is 71330003. The next prime is 71330033. The reversal of 71330023 is 32003317.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71330023 - 2²¹ = 69232871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71330003) 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 in 3 ways as a sum of consecutive naturals, for example, 37890 + ... + 39727.

It is an arithmetic number, because the mean of its divisors is an integer number (17852140).

Almost surely, 2^71330023 is an apocalyptic number.

71330023 is a deficient number, since it is larger than the sum of its proper divisors (78537).

71330023 is an equidigital number, since it uses as much as digits as its factorization.

71330023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78536.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 71330023 is about 8445.7103312865. The cubic root of 71330023 is about 414.7223632925.

The spelling of 71330023 in words is "seventy-one million, three hundred thirty thousand, twenty-three".