20031113213232 has 240 divisors, whose sum is σ = 57352025068800. Its totient is φ = 6019752245760.

The previous prime is 20031113213231. The next prime is 20031113213257. The reversal of 20031113213232 is 23231231113002.

It is a super-2 number, since 2×20031113213232² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20031113213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 354799918 + ... + 354856370.

It is an arithmetic number, because the mean of its divisors is an integer number (238966771120).

Almost surely, 2^{20031113213232} is an apocalyptic number.

20031113213232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20031113213232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28676012534400).

20031113213232 is an abundant number, since it is smaller than the sum of its proper divisors (37320911855568).

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

20031113213232 is a wasteful number, since it uses less digits than its factorization.

20031113213232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56992 (or 56975 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20031113213232 its reverse (23231231113002), we get a palindrome (43262344326234).

The spelling of 20031113213232 in words is "twenty trillion, thirty-one billion, one hundred thirteen million, two hundred thirteen thousand, two hundred thirty-two".