71311267 has 4 divisors (see below), whose sum is σ = 72828576. Its totient is φ = 69793960.

The previous prime is 71311241. The next prime is 71311271. The reversal of 71311267 is 76211317.

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 71311267 - 2¹⁵ = 71278499 is a prime.

It is a super-2 number, since 2×71311267² = 10170593602290578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71311297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758584 + ... + 758677.

It is an arithmetic number, because the mean of its divisors is an integer number (18207144).

Almost surely, 2^71311267 is an apocalyptic number.

71311267 is a deficient number, since it is larger than the sum of its proper divisors (1517309).

71311267 is a wasteful number, since it uses less digits than its factorization.

71311267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517308.

The product of its digits is 1764, while the sum is 28.

The square root of 71311267 is about 8444.5998721076. The cubic root of 71311267 is about 414.6860101357.

The spelling of 71311267 in words is "seventy-one million, three hundred eleven thousand, two hundred sixty-seven".