71481383 has 4 divisors (see below), whose sum is σ = 71509560. Its totient is φ = 71453208.

The previous prime is 71481367. The next prime is 71481419. The reversal of 71481383 is 38318417.

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 71481383 - 2⁴ = 71481367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71481283) 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, 9860 + ... + 15497.

It is an arithmetic number, because the mean of its divisors is an integer number (17877390).

Almost surely, 2^71481383 is an apocalyptic number.

71481383 is a deficient number, since it is larger than the sum of its proper divisors (28177).

71481383 is a wasteful number, since it uses less digits than its factorization.

71481383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28176.

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

The square root of 71481383 is about 8454.6663446880. Note that the first 3 decimals coincide. The cubic root of 71481383 is about 415.0154985260.

The spelling of 71481383 in words is "seventy-one million, four hundred eighty-one thousand, three hundred eighty-three".