131021113200 has 120 divisors (see below), whose sum is σ = 420168512256. Its totient is φ = 34900320000.

The previous prime is 131021113193. The next prime is 131021113211. The reversal of 131021113200 is 2311120131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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 131021113200.

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 23 ways as a sum of consecutive naturals, for example, 1033275 + ... + 1153125.

Almost surely, 2^131021113200 is an apocalyptic number.

131021113200 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 131021113200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210084256128).

131021113200 is an abundant number, since it is smaller than the sum of its proper divisors (289147399056).

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

131021113200 is a wasteful number, since it uses less digits than its factorization.

131021113200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120783 (or 120772 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131021113200 its reverse (2311120131), we get a palindrome (133332233331).

The spelling of 131021113200 in words is "one hundred thirty-one billion, twenty-one million, one hundred thirteen thousand, two hundred".