131121304513500 has 192 divisors, whose sum is σ = 436392313104384. Its totient is φ = 29969168256000.

The previous prime is 131121304513499. The next prime is 131121304513523. The reversal of 131121304513500 is 5315403121131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 230621572 + ... + 231189428.

It is an arithmetic number, because the mean of its divisors is an integer number (2272876630752).

Almost surely, 2^{131121304513500} is an apocalyptic number.

131121304513500 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 131121304513500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218196156552192).

131121304513500 is an abundant number, since it is smaller than the sum of its proper divisors (305271008590884).

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

131121304513500 is a wasteful number, since it uses less digits than its factorization.

131121304513500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589877 (or 589865 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 131121304513500 its reverse (5315403121131), we get a palindrome (136436707634631).

The spelling of 131121304513500 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred four million, five hundred thirteen thousand, five hundred".