71343247 has 8 divisors (see below), whose sum is σ = 72815760. Its totient is φ = 69875520.

The previous prime is 71343229. The next prime is 71343253. The reversal of 71343247 is 74234317.

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 71343247 - 2¹⁹ = 70818959 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 (71343257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53347 + ... + 54667.

It is an arithmetic number, because the mean of its divisors is an integer number (9101970).

Almost surely, 2^71343247 is an apocalyptic number.

71343247 is a deficient number, since it is larger than the sum of its proper divisors (1472513).

71343247 is a wasteful number, since it uses less digits than its factorization.

71343247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393.

The product of its digits is 14112, while the sum is 31.

The square root of 71343247 is about 8446.4931776448. The cubic root of 71343247 is about 414.7479904147.

The spelling of 71343247 in words is "seventy-one million, three hundred forty-three thousand, two hundred forty-seven".