71943271 has 4 divisors (see below), whose sum is σ = 72203272. Its totient is φ = 71683272.

The previous prime is 71943247. The next prime is 71943283. The reversal of 71943271 is 17234917.

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 71943271 - 2²³ = 63554663 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 (71143271) 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, 129585 + ... + 130138.

It is an arithmetic number, because the mean of its divisors is an integer number (18050818).

Almost surely, 2^71943271 is an apocalyptic number.

71943271 is a deficient number, since it is larger than the sum of its proper divisors (260001).

71943271 is a wasteful number, since it uses less digits than its factorization.

71943271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260000.

The product of its digits is 10584, while the sum is 34.

The square root of 71943271 is about 8481.9379271485. The cubic root of 71943271 is about 415.9074756475.

The spelling of 71943271 in words is "seventy-one million, nine hundred forty-three thousand, two hundred seventy-one".