71138003 has 4 divisors (see below), whose sum is σ = 71302728. Its totient is φ = 70973280.

The previous prime is 71137961. The next prime is 71138009. The reversal of 71138003 is 30083117.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30083117 = 163 ⋅184559.

It is a cyclic number.

It is not a de Polignac number, because 71138003 - 2¹⁰ = 71136979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71138003.

It is not an unprimeable number, because it can be changed into a prime (71138009) 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, 81713 + ... + 82578.

It is an arithmetic number, because the mean of its divisors is an integer number (17825682).

Almost surely, 2^71138003 is an apocalyptic number.

71138003 is a deficient number, since it is larger than the sum of its proper divisors (164725).

71138003 is a wasteful number, since it uses less digits than its factorization.

71138003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164724.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 71138003 is about 8434.3347692631. The cubic root of 71138003 is about 414.3498854733.

The spelling of 71138003 in words is "seventy-one million, one hundred thirty-eight thousand, three".