71006504231 has 16 divisors (see below), whose sum is σ = 76604663520. Its totient is φ = 65427922560.

The previous prime is 71006504209. The next prime is 71006504243. The reversal of 71006504231 is 13240560017.

It is not a de Polignac number, because 71006504231 - 2¹⁴ = 71006487847 is a prime.

It is a super-2 number, since 2×71006504231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71006504194 and 71006504203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71006564231) 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 15 ways as a sum of consecutive naturals, for example, 30750905 + ... + 30753213.

It is an arithmetic number, because the mean of its divisors is an integer number (4787791470).

Almost surely, 2^71006504231 is an apocalyptic number.

71006504231 is a deficient number, since it is larger than the sum of its proper divisors (5598159289).

71006504231 is a wasteful number, since it uses less digits than its factorization.

71006504231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 71006504231 in words is "seventy-one billion, six million, five hundred four thousand, two hundred thirty-one".