131322211 has 4 divisors (see below), whose sum is σ = 133282312. Its totient is φ = 129362112.

The previous prime is 131322199. The next prime is 131322223. The reversal of 131322211 is 112223131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (131322199) and next prime (131322223).

It is a cyclic number.

It is not a de Polignac number, because 131322211 - 2⁷ = 131322083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131322251) 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, 979950 + ... + 980083.

It is an arithmetic number, because the mean of its divisors is an integer number (33320578).

Almost surely, 2^131322211 is an apocalyptic number.

131322211 is a deficient number, since it is larger than the sum of its proper divisors (1960101).

131322211 is an equidigital number, since it uses as much as digits as its factorization.

131322211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960100.

The product of its digits is 72, while the sum is 16.

The square root of 131322211 is about 11459.5903504445. The cubic root of 131322211 is about 508.2913613170.

Adding to 131322211 its reverse (112223131), we get a palindrome (243545342).

The spelling of 131322211 in words is "one hundred thirty-one million, three hundred twenty-two thousand, two hundred eleven".