233131132220 has 24 divisors (see below), whose sum is σ = 559514717664. Its totient is φ = 79930673856.

The previous prime is 233131132219. The next prime is 233131132231. The reversal of 233131132220 is 22231131332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832611047 + ... + 832611326.

It is an arithmetic number, because the mean of its divisors is an integer number (23313113236).

Almost surely, 2^233131132220 is an apocalyptic number.

233131132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233131132220 is an abundant number, since it is smaller than the sum of its proper divisors (326383585444).

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

233131132220 is a wasteful number, since it uses less digits than its factorization.

233131132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665222389 (or 1665222387 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 233131132220 its reverse (22231131332), we get a palindrome (255362263552).

The spelling of 233131132220 in words is "two hundred thirty-three billion, one hundred thirty-one million, one hundred thirty-two thousand, two hundred twenty".