20110131223230 has 16 divisors (see below), whose sum is σ = 48264314935824. Its totient is φ = 5362701659520.

The previous prime is 20110131223183. The next prime is 20110131223319. The reversal of 20110131223230 is 3232213101102.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20110131223197 and 20110131223206.

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, 335168853691 + ... + 335168853750.

It is an arithmetic number, because the mean of its divisors is an integer number (3016519683489).

Almost surely, 2^{20110131223230} is an apocalyptic number.

20110131223230 is an abundant number, since it is smaller than the sum of its proper divisors (28154183712594).

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

20110131223230 is a wasteful number, since it uses less digits than its factorization.

20110131223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670337707451.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20110131223230 its reverse (3232213101102), we get a palindrome (23342344324332).

The spelling of 20110131223230 in words is "twenty trillion, one hundred ten billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty".