20031123113320 has 64 divisors (see below), whose sum is σ = 50753344227840. Its totient is φ = 7049075577600.

The previous prime is 20031123113303. The next prime is 20031123113327. The reversal of 20031123113320 is 2331132113002.

It is a super-2 number, since 2×20031123113320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20031123113291 and 20031123113300.

It is not an unprimeable number, because it can be changed into a prime (20031123113327) 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, 734265067 + ... + 734292346.

It is an arithmetic number, because the mean of its divisors is an integer number (793021003560).

Almost surely, 2^{20031123113320} is an apocalyptic number.

20031123113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031123113320 is an abundant number, since it is smaller than the sum of its proper divisors (30722221114520).

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

20031123113320 is a wasteful number, since it uses less digits than its factorization.

20031123113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468557466 (or 1468557462 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20031123113320 its reverse (2331132113002), we get a palindrome (22362255226322).

The spelling of 20031123113320 in words is "twenty trillion, thirty-one billion, one hundred twenty-three million, one hundred thirteen thousand, three hundred twenty".