71310481 has 8 divisors (see below), whose sum is σ = 77897664. Its totient is φ = 64740720.

The previous prime is 71310467. The next prime is 71310487. The reversal of 71310481 is 18401317.

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

It is not a de Polignac number, because 71310481 - 2²¹ = 69213329 is a prime.

It is a super-2 number, since 2×71310481² = 10170369400902722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71310487) 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, 5115 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (9737208).

Almost surely, 2^71310481 is an apocalyptic number.

It is an amenable number.

71310481 is a deficient number, since it is larger than the sum of its proper divisors (6587183).

71310481 is a wasteful number, since it uses less digits than its factorization.

71310481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8711.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 71310481 is about 8444.5533333623. The cubic root of 71310481 is about 414.6844865597.

Adding to 71310481 its reverse (18401317), we get a palindrome (89711798).

The spelling of 71310481 in words is "seventy-one million, three hundred ten thousand, four hundred eighty-one".