131233120220 has 24 divisors (see below), whose sum is σ = 278117901600. Its totient is φ = 52011657792.

The previous prime is 131233120211. The next prime is 131233120231. The reversal of 131233120220 is 22021332131.

131233120220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131233120192 and 131233120201.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30097160 + ... + 30101519.

It is an arithmetic number, because the mean of its divisors is an integer number (11588245900).

Almost surely, 2^131233120220 is an apocalyptic number.

131233120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131233120220 is an abundant number, since it is smaller than the sum of its proper divisors (146884781380).

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

131233120220 is a wasteful number, since it uses less digits than its factorization.

131233120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60198797 (or 60198795 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131233120220 its reverse (22021332131), we get a palindrome (153254452351).

The spelling of 131233120220 in words is "one hundred thirty-one billion, two hundred thirty-three million, one hundred twenty thousand, two hundred twenty".