131202144 has 72 divisors (see below), whose sum is σ = 392759640. Its totient is φ = 41430528.

The previous prime is 131202139. The next prime is 131202151. The reversal of 131202144 is 441202131.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6517 + ... + 17460.

It is an arithmetic number, because the mean of its divisors is an integer number (5454995).

Almost surely, 2^131202144 is an apocalyptic number.

It is an amenable number.

131202144 is an abundant number, since it is smaller than the sum of its proper divisors (261557496).

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

131202144 is a wasteful number, since it uses less digits than its factorization.

131202144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24012 (or 24001 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131202144 is about 11454.3504398984. The cubic root of 131202144 is about 508.1364049763.

Adding to 131202144 its reverse (441202131), we get a palindrome (572404275).

The spelling of 131202144 in words is "one hundred thirty-one million, two hundred two thousand, one hundred forty-four".