131323213 has 8 divisors (see below), whose sum is σ = 150362432. Its totient is φ = 112353696.

The previous prime is 131323189. The next prime is 131323253. The reversal of 131323213 is 312323131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131323213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131323253) 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 7 ways as a sum of consecutive naturals, for example, 13320 + ... + 20977.

It is an arithmetic number, because the mean of its divisors is an integer number (18795304).

Almost surely, 2^131323213 is an apocalyptic number.

It is an amenable number.

131323213 is a deficient number, since it is larger than the sum of its proper divisors (19039219).

131323213 is an equidigital number, since it uses as much as digits as its factorization.

131323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34851.

The product of its digits is 324, while the sum is 19.

The square root of 131323213 is about 11459.6340692013. The cubic root of 131323213 is about 508.2926540830.

Adding to 131323213 its reverse (312323131), we get a palindrome (443646344).

The spelling of 131323213 in words is "one hundred thirty-one million, three hundred twenty-three thousand, two hundred thirteen".