71117131 has 8 divisors (see below), whose sum is σ = 73801728. Its totient is φ = 68457000.

The previous prime is 71117129. The next prime is 71117177. The reversal of 71117131 is 13171117.

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 71117131 - 2¹ = 71117129 is a prime.

It is a super-2 number, since 2×71117131² = 10115292643342322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71117531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 11926.

It is an arithmetic number, because the mean of its divisors is an integer number (9225216).

Almost surely, 2^71117131 is an apocalyptic number.

71117131 is a deficient number, since it is larger than the sum of its proper divisors (2684597).

71117131 is a wasteful number, since it uses less digits than its factorization.

71117131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12233.

The product of its digits is 147, while the sum is 22.

The square root of 71117131 is about 8433.0973550647. The cubic root of 71117131 is about 414.3093578772.

Adding to 71117131 its reverse (13171117), we get a palindrome (84288248).

The spelling of 71117131 in words is "seventy-one million, one hundred seventeen thousand, one hundred thirty-one".