71313311 has 2 divisors, whose sum is σ = 71313312. Its totient is φ = 71313310.

The previous prime is 71313301. The next prime is 71313329. The reversal of 71313311 is 11331317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71313311 - 2¹⁰ = 71312287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71313301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35656655 + 35656656.

It is an arithmetic number, because the mean of its divisors is an integer number (35656656).

Almost surely, 2^71313311 is an apocalyptic number.

71313311 is a deficient number, since it is larger than the sum of its proper divisors (1).

71313311 is an equidigital number, since it uses as much as digits as its factorization.

71313311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189, while the sum is 20.

The square root of 71313311 is about 8444.7208953286. The cubic root of 71313311 is about 414.6899721562.

Adding to 71313311 its reverse (11331317), we get a palindrome (82644628).

The spelling of 71313311 in words is "seventy-one million, three hundred thirteen thousand, three hundred eleven".