131302260 has 36 divisors (see below), whose sum is σ = 398284068. Its totient is φ = 35013888.

The previous prime is 131302229. The next prime is 131302261. The reversal of 131302260 is 62203131.

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 112275216 = 4362^2 + 10596^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×131302260² = 34480566962215200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364549 + ... + 364908.

Almost surely, 2^131302260 is an apocalyptic number.

131302260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131302260 is an abundant number, since it is smaller than the sum of its proper divisors (266981808).

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

131302260 is a wasteful number, since it uses less digits than its factorization.

131302260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729472 (or 729467 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131302260 is about 11458.7198237849. The cubic root of 131302260 is about 508.2656194554.

Adding to 131302260 its reverse (62203131), we get a palindrome (193505391).

The spelling of 131302260 in words is "one hundred thirty-one million, three hundred two thousand, two hundred sixty".