22131230 has 16 divisors (see below), whose sum is σ = 43457904. Its totient is φ = 8047680.

The previous prime is 22131223. The next prime is 22131259. The reversal of 22131230 is 3213122.

It is a happy number.

It is a Curzon number.

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, 100487 + ... + 100706.

It is an arithmetic number, because the mean of its divisors is an integer number (2716119).

Almost surely, 2^22131230 is an apocalyptic number.

22131230 is a deficient number, since it is larger than the sum of its proper divisors (21326674).

22131230 is a wasteful number, since it uses less digits than its factorization.

22131230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201211.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22131230 is about 4704.3841254727. The cubic root of 22131230 is about 280.7599677646.

Adding to 22131230 its reverse (3213122), we get a palindrome (25344352).

It can be divided in two parts, 2213 and 1230, that added together give a palindrome (3443).

The spelling of 22131230 in words is "twenty-two million, one hundred thirty-one thousand, two hundred thirty".