71130830 has 16 divisors (see below), whose sum is σ = 128502720. Its totient is φ = 28348512.

The previous prime is 71130827. The next prime is 71130869. The reversal of 71130830 is 3803117.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71130796 and 71130805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10070 + ... + 15609.

It is an arithmetic number, because the mean of its divisors is an integer number (8031420).

Almost surely, 2^71130830 is an apocalyptic number.

71130830 is a deficient number, since it is larger than the sum of its proper divisors (57371890).

71130830 is a wasteful number, since it uses less digits than its factorization.

71130830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25963.

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

The square root of 71130830 is about 8433.9095323581. The cubic root of 71130830 is about 414.3359584042.

Adding to 71130830 its reverse (3803117), we get a palindrome (74933947).

The spelling of 71130830 in words is "seventy-one million, one hundred thirty thousand, eight hundred thirty".