71213333 has 8 divisors (see below), whose sum is σ = 71984088. Its totient is φ = 70447104.

The previous prime is 71213327. The next prime is 71213347. The reversal of 71213333 is 33331217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4986289 + 66227044 = 2233^2 + 8138^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71213333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71213299 and 71213308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71213353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37085 + ... + 38957.

It is an arithmetic number, because the mean of its divisors is an integer number (8998011).

Almost surely, 2^71213333 is an apocalyptic number.

It is an amenable number.

71213333 is a deficient number, since it is larger than the sum of its proper divisors (770755).

71213333 is a wasteful number, since it uses less digits than its factorization.

71213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its digits is 1134, while the sum is 23.

The square root of 71213333 is about 8438.7992629283. The cubic root of 71213333 is about 414.4960893990.

The spelling of 71213333 in words is "seventy-one million, two hundred thirteen thousand, three hundred thirty-three".