131202120 has 128 divisors (see below), whose sum is σ = 469463040. Its totient is φ = 28680960.

The previous prime is 131202089. The next prime is 131202139. The reversal of 131202120 is 21202131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 131202096 and 131202105.

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, 15925 + ... + 22715.

It is an arithmetic number, because the mean of its divisors is an integer number (3667680).

Almost surely, 2^131202120 is an apocalyptic number.

131202120 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 131202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234731520).

131202120 is an abundant number, since it is smaller than the sum of its proper divisors (338260920).

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

131202120 is a wasteful number, since it uses less digits than its factorization.

131202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6835 (or 6831 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 131202120 is about 11454.3493922614. The cubic root of 131202120 is about 508.1363739929.

Adding to 131202120 its reverse (21202131), we get a palindrome (152404251).

The spelling of 131202120 in words is "one hundred thirty-one million, two hundred two thousand, one hundred twenty".