71223430 has 16 divisors (see below), whose sum is σ = 132338304. Its totient is φ = 27570240.

The previous prime is 71223413. The next prime is 71223487. The reversal of 71223430 is 3432217.

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, 114567 + ... + 115186.

It is an arithmetic number, because the mean of its divisors is an integer number (8271144).

Almost surely, 2^71223430 is an apocalyptic number.

71223430 is a deficient number, since it is larger than the sum of its proper divisors (61114874).

71223430 is a wasteful number, since it uses less digits than its factorization.

71223430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229791.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 71223430 is about 8439.3974903425. The cubic root of 71223430 is about 414.5156782833.

Adding to 71223430 its reverse (3432217), we get a palindrome (74655647).

It can be divided in two parts, 712 and 23430, that added together give a palindrome (24142).

The spelling of 71223430 in words is "seventy-one million, two hundred twenty-three thousand, four hundred thirty".