131326320 has 160 divisors (see below), whose sum is σ = 436972032. Its totient is φ = 32541696.

The previous prime is 131326301. The next prime is 131326337. The reversal of 131326320 is 23623131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203919 + ... + 204561.

Almost surely, 2^131326320 is an apocalyptic number.

131326320 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 131326320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218486016).

131326320 is an abundant number, since it is smaller than the sum of its proper divisors (305645712).

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

131326320 is a wasteful number, since it uses less digits than its factorization.

131326320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 131326320 is about 11459.7696311924. The cubic root of 131326320 is about 508.2966626478.

Adding to 131326320 its reverse (23623131), we get a palindrome (154949451).

The spelling of 131326320 in words is "one hundred thirty-one million, three hundred twenty-six thousand, three hundred twenty".