71884313 has 4 divisors (see below), whose sum is σ = 76112820. Its totient is φ = 67655808.

The previous prime is 71884289. The next prime is 71884333. The reversal of 71884313 is 31348817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31348817 = 2741 ⋅11437.

It can be written as a sum of positive squares in 2 ways, for example, as 41886784 + 29997529 = 6472^2 + 5477^2 .

It is a cyclic number.

It is not a de Polignac number, because 71884313 - 2²² = 67690009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71884333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2114228 + ... + 2114261.

It is an arithmetic number, because the mean of its divisors is an integer number (19028205).

Almost surely, 2^71884313 is an apocalyptic number.

It is an amenable number.

71884313 is a deficient number, since it is larger than the sum of its proper divisors (4228507).

71884313 is a wasteful number, since it uses less digits than its factorization.

71884313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228506.

The product of its digits is 16128, while the sum is 35.

The square root of 71884313 is about 8478.4617118909. The cubic root of 71884313 is about 415.7938315960.

The spelling of 71884313 in words is "seventy-one million, eight hundred eighty-four thousand, three hundred thirteen".