131321211 has 8 divisors (see below), whose sum is σ = 200108544. Its totient is φ = 75040680.

The previous prime is 131321173. The next prime is 131321221. The reversal of 131321211 is 112123131.

It is a happy number.

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

It is not a de Polignac number, because 131321211 - 2⁷ = 131321083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131321221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3126675 + ... + 3126716.

It is an arithmetic number, because the mean of its divisors is an integer number (25013568).

Almost surely, 2^131321211 is an apocalyptic number.

131321211 is a deficient number, since it is larger than the sum of its proper divisors (68787333).

131321211 is an equidigital number, since it uses as much as digits as its factorization.

131321211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253401.

The product of its digits is 36, while the sum is 15.

The square root of 131321211 is about 11459.5467187843. The cubic root of 131321211 is about 508.2900711249.

Adding to 131321211 its reverse (112123131), we get a palindrome (243444342).

The spelling of 131321211 in words is "one hundred thirty-one million, three hundred twenty-one thousand, two hundred eleven".