20131030011120 has 80 divisors (see below), whose sum is σ = 71321363473920. Its totient is φ = 4601378287872.

The previous prime is 20131030011049. The next prime is 20131030011121. The reversal of 20131030011120 is 2111003013102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×20131030011120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20131030011120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131030011121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5991376300 + ... + 5991379659.

It is an arithmetic number, because the mean of its divisors is an integer number (891517043424).

Almost surely, 2^{20131030011120} is an apocalyptic number.

20131030011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131030011120 is an abundant number, since it is smaller than the sum of its proper divisors (51190333462800).

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

20131030011120 is a wasteful number, since it uses less digits than its factorization.

20131030011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982755982 (or 11982755976 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20131030011120 its reverse (2111003013102), we get a palindrome (22242033024222).

The spelling of 20131030011120 in words is "twenty trillion, one hundred thirty-one billion, thirty million, eleven thousand, one hundred twenty".