131200321 has 8 divisors (see below), whose sum is σ = 155113920. Its totient is φ = 108579408.

The previous prime is 131200319. The next prime is 131200327. The reversal of 131200321 is 123002131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131200321 - 2¹ = 131200319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131200327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322951 + ... + 323356.

It is an arithmetic number, because the mean of its divisors is an integer number (19389240).

Almost surely, 2^131200321 is an apocalyptic number.

It is an amenable number.

131200321 is a deficient number, since it is larger than the sum of its proper divisors (23913599).

131200321 is an equidigital number, since it uses as much as digits as its factorization.

131200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646343.

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

The square root of 131200321 is about 11454.2708628703. The cubic root of 131200321 is about 508.1340515164.

Adding to 131200321 its reverse (123002131), we get a palindrome (254202452).

The spelling of 131200321 in words is "one hundred thirty-one million, two hundred thousand, three hundred twenty-one".