233131230220 has 96 divisors (see below), whose sum is σ = 577556445312. Its totient is φ = 77375305728.

The previous prime is 233131230191. The next prime is 233131230251. The reversal of 233131230220 is 22032131332.

It is a junction number, because it is equal to n+sod(n) for n = 233131230191 and 233131230200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906232 + ... + 1134688.

It is an arithmetic number, because the mean of its divisors is an integer number (6016212972).

Almost surely, 2^233131230220 is an apocalyptic number.

233131230220 is a gapful number since it is divisible by the number (20) 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 233131230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288778222656).

233131230220 is an abundant number, since it is smaller than the sum of its proper divisors (344425215092).

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

233131230220 is a wasteful number, since it uses less digits than its factorization.

233131230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228707 (or 228705 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 233131230220 its reverse (22032131332), we get a palindrome (255163361552).

The spelling of 233131230220 in words is "two hundred thirty-three billion, one hundred thirty-one million, two hundred thirty thousand, two hundred twenty".