71323881 has 8 divisors (see below), whose sum is σ = 95359104. Its totient is φ = 47418960.

The previous prime is 71323871. The next prime is 71323907. The reversal of 71323881 is 18832317.

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

It is not a de Polignac number, because 71323881 - 2¹⁰ = 71322857 is a prime.

It is a super-2 number, since 2×71323881² = 10174192001804322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71323841) 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, 31290 + ... + 33491.

It is an arithmetic number, because the mean of its divisors is an integer number (11919888).

Almost surely, 2^71323881 is an apocalyptic number.

It is an amenable number.

71323881 is a deficient number, since it is larger than the sum of its proper divisors (24035223).

71323881 is a wasteful number, since it uses less digits than its factorization.

71323881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65151.

The product of its digits is 8064, while the sum is 33.

The square root of 71323881 is about 8445.3467069150. The cubic root of 71323881 is about 414.7104594790.

The spelling of 71323881 in words is "seventy-one million, three hundred twenty-three thousand, eight hundred eighty-one".