131600320 has 28 divisors (see below), whose sum is σ = 313374024. Its totient is φ = 52640000.

The previous prime is 131600311. The next prime is 131600351. The reversal of 131600320 is 23006131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 131600294 and 131600303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205306 + ... + 205945.

Almost surely, 2^131600320 is an apocalyptic number.

131600320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131600320 is an abundant number, since it is smaller than the sum of its proper divisors (181773704).

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

131600320 is an equidigital number, since it uses as much as digits as its factorization.

131600320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411268 (or 411258 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131600320 is about 11471.7182671124. The cubic root of 131600320 is about 508.6499214550.

Adding to 131600320 its reverse (23006131), we get a palindrome (154606451).

The spelling of 131600320 in words is "one hundred thirty-one million, six hundred thousand, three hundred twenty".