71111351 has 2 divisors, whose sum is σ = 71111352. Its totient is φ = 71111350.

The previous prime is 71111311. The next prime is 71111353. The reversal of 71111351 is 15311117.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71111351 is a prime.

Together with 71111353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71111353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35555675 + 35555676.

It is an arithmetic number, because the mean of its divisors is an integer number (35555676).

Almost surely, 2^71111351 is an apocalyptic number.

71111351 is a deficient number, since it is larger than the sum of its proper divisors (1).

71111351 is an equidigital number, since it uses as much as digits as its factorization.

71111351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105, while the sum is 20.

The square root of 71111351 is about 8432.7546507651. The cubic root of 71111351 is about 414.2981333291.

Adding to 71111351 its reverse (15311117), we get a palindrome (86422468).

The spelling of 71111351 in words is "seventy-one million, one hundred eleven thousand, three hundred fifty-one".