71112230 has 48 divisors (see below), whose sum is σ = 150452640. Its totient is φ = 24127488.

The previous prime is 71112211. The next prime is 71112281. The reversal of 71112230 is 3221117.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71112199 and 71112208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49766 + ... + 51174.

It is an arithmetic number, because the mean of its divisors is an integer number (3134430).

Almost surely, 2^71112230 is an apocalyptic number.

71112230 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71112230 is an abundant number, since it is smaller than the sum of its proper divisors (79340410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71112230 is a wasteful number, since it uses less digits than its factorization.

71112230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 71112230 is about 8432.8067688048. The cubic root of 71112230 is about 414.2998403541.

Adding to 71112230 its reverse (3221117), we get a palindrome (74333347).

The spelling of 71112230 in words is "seventy-one million, one hundred twelve thousand, two hundred thirty".