131232100120 has 128 divisors (see below), whose sum is σ = 326994071040. Its totient is φ = 47001507840.

The previous prime is 131232100039. The next prime is 131232100159. The reversal of 131232100120 is 21001232131.

It is a super-4 number, since 4×131232100120⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131232100094 and 131232100103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12301909 + ... + 12312571.

It is an arithmetic number, because the mean of its divisors is an integer number (2554641180).

Almost surely, 2^131232100120 is an apocalyptic number.

131232100120 is a gapful number since it is divisible by the number (10) 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 131232100120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163497035520).

131232100120 is an abundant number, since it is smaller than the sum of its proper divisors (195761970920).

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

131232100120 is a wasteful number, since it uses less digits than its factorization.

131232100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105 (or 11101 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131232100120 its reverse (21001232131), we get a palindrome (152233332251).

The spelling of 131232100120 in words is "one hundred thirty-one billion, two hundred thirty-two million, one hundred thousand, one hundred twenty".