31221324230 has 8 divisors (see below), whose sum is σ = 56198383632. Its totient is φ = 12488529688.

The previous prime is 31221324209. The next prime is 31221324241. The reversal of 31221324230 is 3242312213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31221324196 and 31221324205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561066202 + ... + 1561066221.

It is an arithmetic number, because the mean of its divisors is an integer number (7024797954).

Almost surely, 2^31221324230 is an apocalyptic number.

31221324230 is a deficient number, since it is larger than the sum of its proper divisors (24977059402).

31221324230 is a wasteful number, since it uses less digits than its factorization.

31221324230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122132430.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31221324230 its reverse (3242312213), we get a palindrome (34463636443).

The spelling of 31221324230 in words is "thirty-one billion, two hundred twenty-one million, three hundred twenty-four thousand, two hundred thirty".