71130243 has 32 divisors (see below), whose sum is σ = 106156800. Its totient is φ = 42166656.

The previous prime is 71130229. The next prime is 71130247. The reversal of 71130243 is 34203117.

It is not a de Polignac number, because 71130243 - 2¹⁸ = 70868099 is a prime.

It is a super-2 number, since 2×71130243² = 10119022938478098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71130247) 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 31 ways as a sum of consecutive naturals, for example, 60580 + ... + 61742.

It is an arithmetic number, because the mean of its divisors is an integer number (3317400).

Almost surely, 2^71130243 is an apocalyptic number.

71130243 is a deficient number, since it is larger than the sum of its proper divisors (35026557).

71130243 is a wasteful number, since it uses less digits than its factorization.

71130243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 71130243 is about 8433.8747322924. The cubic root of 71130243 is about 414.3348186459.

The spelling of 71130243 in words is "seventy-one million, one hundred thirty thousand, two hundred forty-three".