71389223 has 8 divisors (see below), whose sum is σ = 72729360. Its totient is φ = 70061760.

The previous prime is 71389211. The next prime is 71389229. The reversal of 71389223 is 32298317.

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 71389223 - 2¹⁸ = 71127079 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 (71389229) 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, 8603 + ... + 14723.

It is an arithmetic number, because the mean of its divisors is an integer number (9091170).

Almost surely, 2^71389223 is an apocalyptic number.

71389223 is a deficient number, since it is larger than the sum of its proper divisors (1340137).

71389223 is a wasteful number, since it uses less digits than its factorization.

71389223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6337.

The product of its digits is 18144, while the sum is 35.

The square root of 71389223 is about 8449.2143421741. The cubic root of 71389223 is about 414.8370638251.

It can be divided in two parts, 7138 and 9223, that added together give a palindrome (16361).

The spelling of 71389223 in words is "seventy-one million, three hundred eighty-nine thousand, two hundred twenty-three".