131020231200 has 72 divisors (see below), whose sum is σ = 426470860368. Its totient is φ = 34938727680.

The previous prime is 131020231189. The next prime is 131020231207. The reversal of 131020231200 is 2132020131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131020231200.

It is not an unprimeable number, because it can be changed into a prime (131020231207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27293482 + ... + 27298281.

It is an arithmetic number, because the mean of its divisors is an integer number (5923206394).

Almost surely, 2^131020231200 is an apocalyptic number.

131020231200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020231200 is an abundant number, since it is smaller than the sum of its proper divisors (295450629168).

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

131020231200 is a wasteful number, since it uses less digits than its factorization.

131020231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54591786 (or 54591773 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 131020231200 its reverse (2132020131), we get a palindrome (133152251331).

The spelling of 131020231200 in words is "one hundred thirty-one billion, twenty million, two hundred thirty-one thousand, two hundred".