71141281 has 4 divisors (see below), whose sum is σ = 71158192. Its totient is φ = 71124372.

The previous prime is 71141261. The next prime is 71141293. The reversal of 71141281 is 18214117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71141281 - 2¹⁹ = 70616993 is a prime.

It is a super-2 number, since 2×71141281² = 10122163724641922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71141251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3346 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (17789548).

Almost surely, 2^71141281 is an apocalyptic number.

It is an amenable number.

71141281 is a deficient number, since it is larger than the sum of its proper divisors (16911).

71141281 is an equidigital number, since it uses as much as digits as its factorization.

71141281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16910.

The product of its digits is 448, while the sum is 25.

The square root of 71141281 is about 8434.5290917751. The cubic root of 71141281 is about 414.3562497137.

Adding to 71141281 its reverse (18214117), we get a palindrome (89355398).

The spelling of 71141281 in words is "seventy-one million, one hundred forty-one thousand, two hundred eighty-one".