71033141 has 4 divisors (see below), whose sum is σ = 71061900. Its totient is φ = 71004384.

The previous prime is 71033129. The next prime is 71033173. The reversal of 71033141 is 14133017.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35880100 + 35153041 = 5990^2 + 5929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71033141 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 (71033101) 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, 10286 + ... + 15743.

It is an arithmetic number, because the mean of its divisors is an integer number (17765475).

Almost surely, 2^71033141 is an apocalyptic number.

It is an amenable number.

71033141 is a deficient number, since it is larger than the sum of its proper divisors (28759).

71033141 is a wasteful number, since it uses less digits than its factorization.

71033141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28758.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 71033141 is about 8428.1161002919. The cubic root of 71033141 is about 414.1461925454.

Adding to 71033141 its reverse (14133017), we get a palindrome (85166158).

The spelling of 71033141 in words is "seventy-one million, thirty-three thousand, one hundred forty-one".