131012320 has 24 divisors (see below), whose sum is σ = 309516984. Its totient is φ = 52404864.

The previous prime is 131012317. The next prime is 131012327. The reversal of 131012320 is 23210131.

It is a self number, because there is not a number n which added to its sum of digits gives 131012320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409254 + ... + 409573.

It is an arithmetic number, because the mean of its divisors is an integer number (12896541).

Almost surely, 2^131012320 is an apocalyptic number.

131012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131012320 is an abundant number, since it is smaller than the sum of its proper divisors (178504664).

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

131012320 is an equidigital number, since it uses as much as digits as its factorization.

131012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818842 (or 818834 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131012320 is about 11446.0613313052. The cubic root of 131012320 is about 507.8912284943.

Adding to 131012320 its reverse (23210131), we get a palindrome (154222451).

The spelling of 131012320 in words is "one hundred thirty-one million, twelve thousand, three hundred twenty".