233131222020 has 48 divisors (see below), whose sum is σ = 659496999168. Its totient is φ = 61527413760.

The previous prime is 233131222007. The next prime is 233131222057. The reversal of 233131222020 is 20222131332.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20022636 + ... + 20034275.

It is an arithmetic number, because the mean of its divisors is an integer number (13739520816).

Almost surely, 2^233131222020 is an apocalyptic number.

233131222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233131222020 is an abundant number, since it is smaller than the sum of its proper divisors (426365777148).

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

233131222020 is a wasteful number, since it uses less digits than its factorization.

233131222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40057020 (or 40057018 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 233131222020 its reverse (20222131332), we get a palindrome (253353353352).

The spelling of 233131222020 in words is "two hundred thirty-three billion, one hundred thirty-one million, two hundred twenty-two thousand, twenty".