71162071131 has 4 divisors (see below), whose sum is σ = 94882761512. Its totient is φ = 47441380752.

The previous prime is 71162071129. The next prime is 71162071147. The reversal of 71162071131 is 13117026117.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71162071131 - 2¹ = 71162071129 is a prime.

It is a super-2 number, since 2×71162071131² (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 (71162071151) 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, 11860345186 + ... + 11860345191.

It is an arithmetic number, because the mean of its divisors is an integer number (23720690378).

Almost surely, 2^71162071131 is an apocalyptic number.

71162071131 is a deficient number, since it is larger than the sum of its proper divisors (23720690381).

71162071131 is a wasteful number, since it uses less digits than its factorization.

71162071131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23720690380.

The product of its (nonzero) digits is 1764, while the sum is 30.

Adding to 71162071131 its reverse (13117026117), we get a palindrome (84279097248).

The spelling of 71162071131 in words is "seventy-one billion, one hundred sixty-two million, seventy-one thousand, one hundred thirty-one".