131323211 has 4 divisors (see below), whose sum is σ = 131370000. Its totient is φ = 131276424.

The previous prime is 131323189. The next prime is 131323253. The reversal of 131323211 is 112323131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112323131 = 17 ⋅6607243.

It is a cyclic number.

It is not a de Polignac number, because 131323211 - 2¹⁰ = 131322187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131323211.

It is not an unprimeable number, because it can be changed into a prime (131323111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18896 + ... + 24893.

It is an arithmetic number, because the mean of its divisors is an integer number (32842500).

Almost surely, 2^131323211 is an apocalyptic number.

131323211 is a deficient number, since it is larger than the sum of its proper divisors (46789).

131323211 is an equidigital number, since it uses as much as digits as its factorization.

131323211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46788.

The product of its digits is 108, while the sum is 17.

The square root of 131323211 is about 11459.6339819385. The cubic root of 131323211 is about 508.2926515026.

Adding to 131323211 its reverse (112323131), we get a palindrome (243646342).

The spelling of 131323211 in words is "one hundred thirty-one million, three hundred twenty-three thousand, two hundred eleven".