131439500 has 48 divisors (see below), whose sum is σ = 288724800. Its totient is φ = 52272000.

The previous prime is 131439499. The next prime is 131439509. The reversal of 131439500 is 5934131.

131439500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 131439500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131439509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98840 + ... + 100160.

It is an arithmetic number, because the mean of its divisors is an integer number (6015100).

Almost surely, 2^131439500 is an apocalyptic number.

131439500 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 131439500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144362400).

131439500 is an abundant number, since it is smaller than the sum of its proper divisors (157285300).

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

131439500 is a wasteful number, since it uses less digits than its factorization.

131439500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 131439500 is about 11464.7067123411. The cubic root of 131439500 is about 508.4426412492.

The spelling of 131439500 in words is "one hundred thirty-one million, four hundred thirty-nine thousand, five hundred".