71356804940231 has 4 divisors (see below), whose sum is σ = 73097214816864. Its totient is φ = 69616395063600.

The previous prime is 71356804940191. The next prime is 71356804940243. The reversal of 71356804940231 is 13204940865317.

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

It is a cyclic number.

It is not a de Polignac number, because 71356804940231 - 2³⁰ = 71355731198407 is a prime.

It is a super-2 number, since 2×71356804940231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71356804940251) 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, 870204938255 + ... + 870204938336.

It is an arithmetic number, because the mean of its divisors is an integer number (18274303704216).

It is a 1-persistent number, because it is pandigital, but 2⋅71356804940231 = 142713609880462 is not.

Almost surely, 2^{71356804940231} is an apocalyptic number.

71356804940231 is a deficient number, since it is larger than the sum of its proper divisors (1740409876633).

71356804940231 is a wasteful number, since it uses less digits than its factorization.

71356804940231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740409876632.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 71356804940231 in words is "seventy-one trillion, three hundred fifty-six billion, eight hundred four million, nine hundred forty thousand, two hundred thirty-one".