131503210000 has 100 divisors (see below), whose sum is σ = 318568338000. Its totient is φ = 52570576000.

The previous prime is 131503209989. The next prime is 131503210019. The reversal of 131503210000 is 12305131.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25787451 + ... + 25792549.

It is an arithmetic number, because the mean of its divisors is an integer number (3185683380).

Almost surely, 2^131503210000 is an apocalyptic number.

131503210000 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 131503210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159284169000).

131503210000 is an abundant number, since it is smaller than the sum of its proper divisors (187065128000).

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

131503210000 is an equidigital number, since it uses as much as digits as its factorization.

131503210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706 (or 7685 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 131503210000 its reverse (12305131), we get a palindrome (131515515131).

The spelling of 131503210000 in words is "one hundred thirty-one billion, five hundred three million, two hundred ten thousand".