71317206 has 32 divisors (see below), whose sum is σ = 163951200. Its totient is φ = 22952160.

The previous prime is 71317201. The next prime is 71317219. The reversal of 71317206 is 60271317.

It is a super-2 number, since 2×71317206² = 10172287743292872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 71317206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71317201) 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 15 ways as a sum of consecutive naturals, for example, 21205 + ... + 24336.

It is an arithmetic number, because the mean of its divisors is an integer number (5123475).

Almost surely, 2^71317206 is an apocalyptic number.

71317206 is an abundant number, since it is smaller than the sum of its proper divisors (92633994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71317206 is a wasteful number, since it uses less digits than its factorization.

71317206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45581 (or 45575 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 71317206 is about 8444.9515096299. The cubic root of 71317206 is about 414.6975218830.

The spelling of 71317206 in words is "seventy-one million, three hundred seventeen thousand, two hundred six".