131540000 has 60 divisors (see below), whose sum is σ = 323657334. Its totient is φ = 52608000.

The previous prime is 131539997. The next prime is 131540029. The reversal of 131540000 is 45131.

It can be written as a sum of positive squares in 5 ways, for example, as 25120144 + 106419856 = 5012^2 + 10316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16712 + ... + 23288.

Almost surely, 2^131540000 is an apocalyptic number.

131540000 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 131540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161828667).

131540000 is an abundant number, since it is smaller than the sum of its proper divisors (192117334).

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

131540000 is an frugal number, since it uses more digits than its factorization.

131540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6607 (or 6584 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 131540000 is about 11469.0888914508. The cubic root of 131540000 is about 508.5721950680.

Adding to 131540000 its reverse (45131), we get a palindrome (131585131).

The spelling of 131540000 in words is "one hundred thirty-one million, five hundred forty thousand".