71311814 has 16 divisors (see below), whose sum is σ = 123333408. Its totient is φ = 30291072.

The previous prime is 71311789. The next prime is 71311829. The reversal of 71311814 is 41811317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20957 + ... + 24120.

It is an arithmetic number, because the mean of its divisors is an integer number (7708338).

Almost surely, 2^71311814 is an apocalyptic number.

71311814 is a deficient number, since it is larger than the sum of its proper divisors (52021594).

71311814 is a wasteful number, since it uses less digits than its factorization.

71311814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45199.

The product of its digits is 672, while the sum is 26.

The square root of 71311814 is about 8444.6322596073. The cubic root of 71311814 is about 414.6870704294.

The spelling of 71311814 in words is "seventy-one million, three hundred eleven thousand, eight hundred fourteen".