71085701731 has 8 divisors (see below), whose sum is σ = 77564390400. Its totient is φ = 64609738440.

The previous prime is 71085701707. The next prime is 71085701767. The reversal of 71085701731 is 13710758017.

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 71085701731 - 2¹¹ = 71085699683 is a prime.

It is a super-2 number, since 2×71085701731² (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 (71085705731) 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, 626611 + ... + 731308.

It is an arithmetic number, because the mean of its divisors is an integer number (9695548800).

Almost surely, 2^71085701731 is an apocalyptic number.

71085701731 is a deficient number, since it is larger than the sum of its proper divisors (6478688669).

71085701731 is a wasteful number, since it uses less digits than its factorization.

71085701731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362689.

The product of its (nonzero) digits is 41160, while the sum is 40.

The spelling of 71085701731 in words is "seventy-one billion, eighty-five million, seven hundred one thousand, seven hundred thirty-one".