71188354231 has 2 divisors, whose sum is σ = 71188354232. Its totient is φ = 71188354230.

The previous prime is 71188354219. The next prime is 71188354247. The reversal of 71188354231 is 13245388117.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71188354231 is a prime.

It is a super-2 number, since 2×71188354231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71188354271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35594177115 + 35594177116.

It is an arithmetic number, because the mean of its divisors is an integer number (35594177116).

Almost surely, 2^71188354231 is an apocalyptic number.

71188354231 is a deficient number, since it is larger than the sum of its proper divisors (1).

71188354231 is an equidigital number, since it uses as much as digits as its factorization.

71188354231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The spelling of 71188354231 in words is "seventy-one billion, one hundred eighty-eight million, three hundred fifty-four thousand, two hundred thirty-one".