71321223 has 8 divisors (see below), whose sum is σ = 95136768. Its totient is φ = 47526584.

The previous prime is 71321221. The next prime is 71321233. The reversal of 71321223 is 32212317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71321223 - 2¹ = 71321221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71321223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71321221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6490 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (11892096).

Almost surely, 2^71321223 is an apocalyptic number.

71321223 is a deficient number, since it is larger than the sum of its proper divisors (23815545).

71321223 is a wasteful number, since it uses less digits than its factorization.

71321223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10453.

The product of its digits is 504, while the sum is 21.

The square root of 71321223 is about 8445.1893406838. The cubic root of 71321223 is about 414.7053077959.

The spelling of 71321223 in words is "seventy-one million, three hundred twenty-one thousand, two hundred twenty-three".