131321260 has 96 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 40516608.

The previous prime is 131321257. The next prime is 131321261. The reversal of 131321260 is 62123131.

It is not an unprimeable number, because it can be changed into a prime (131321261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53541 + ... + 55939.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^131321260 is an apocalyptic number.

131321260 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 131321260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174182400).

131321260 is an abundant number, since it is smaller than the sum of its proper divisors (217043540).

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

131321260 is a wasteful number, since it uses less digits than its factorization.

131321260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 131321260 is about 11459.5488567395. The cubic root of 131321260 is about 508.2901343445.

Adding to 131321260 its reverse (62123131), we get a palindrome (193444391).

The spelling of 131321260 in words is "one hundred thirty-one million, three hundred twenty-one thousand, two hundred sixty".