20110231033020 has 72 divisors (see below), whose sum is σ = 61006500893520. Its totient is φ = 5362247681280.

The previous prime is 20110231033003. The next prime is 20110231033021. The reversal of 20110231033020 is 2033013201102.

20110231033020 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 0 + 2 + 310 + 330 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20110231032984 and 20110231033002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110231033021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2989825 + ... + 7011384.

It is an arithmetic number, because the mean of its divisors is an integer number (847312512410).

Almost surely, 2^{20110231033020} is an apocalyptic number.

20110231033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110231033020 is an abundant number, since it is smaller than the sum of its proper divisors (40896269860500).

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

20110231033020 is a wasteful number, since it uses less digits than its factorization.

20110231033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012395 (or 10012390 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20110231033020 its reverse (2033013201102), we get a palindrome (22143244234122).

The spelling of 20110231033020 in words is "twenty trillion, one hundred ten billion, two hundred thirty-one million, thirty-three thousand, twenty".