71216198131 has 8 divisors (see below), whose sum is σ = 76709085264. Its totient is φ = 65725413600.

The previous prime is 71216198117. The next prime is 71216198147. The reversal of 71216198131 is 13189161217.

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 71216198131 - 2⁵ = 71216198099 is a prime.

It is a super-2 number, since 2×71216198131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71216198171) 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, 454945 + ... + 591106.

It is an arithmetic number, because the mean of its divisors is an integer number (9588635658).

Almost surely, 2^71216198131 is an apocalyptic number.

71216198131 is a deficient number, since it is larger than the sum of its proper divisors (5492887133).

71216198131 is a wasteful number, since it uses less digits than its factorization.

71216198131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051301.

The product of its digits is 18144, while the sum is 40.

The spelling of 71216198131 in words is "seventy-one billion, two hundred sixteen million, one hundred ninety-eight thousand, one hundred thirty-one".