71320269 has 4 divisors (see below), whose sum is σ = 95093696. Its totient is φ = 47546844.

The previous prime is 71320237. The next prime is 71320283. The reversal of 71320269 is 96202317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71320269 - 2⁵ = 71320237 is a prime.

It is a super-2 number, since 2×71320269² = 10173161540464722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71320969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11886709 + ... + 11886714.

It is an arithmetic number, because the mean of its divisors is an integer number (23773424).

Almost surely, 2^71320269 is an apocalyptic number.

It is an amenable number.

71320269 is a deficient number, since it is larger than the sum of its proper divisors (23773427).

71320269 is a wasteful number, since it uses less digits than its factorization.

71320269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23773426.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 71320269 is about 8445.1328586352. The cubic root of 71320269 is about 414.7034587407.

The spelling of 71320269 in words is "seventy-one million, three hundred twenty thousand, two hundred sixty-nine".