31204230224 has 40 divisors (see below), whose sum is σ = 62526236160. Its totient is φ = 15076833408.

The previous prime is 31204230209. The next prime is 31204230227. The reversal of 31204230224 is 42203240213.

It is a self number, because there is not a number n which added to its sum of digits gives 31204230224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204230227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203219 + ... + 322034.

It is an arithmetic number, because the mean of its divisors is an integer number (1563155904).

Almost surely, 2^31204230224 is an apocalyptic number.

It is an amenable number.

31204230224 is an abundant number, since it is smaller than the sum of its proper divisors (31322005936).

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

31204230224 is a wasteful number, since it uses less digits than its factorization.

31204230224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525387 (or 525381 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 31204230224 its reverse (42203240213), we get a palindrome (73407470437).

The spelling of 31204230224 in words is "thirty-one billion, two hundred four million, two hundred thirty thousand, two hundred twenty-four".