131312211 has 8 divisors (see below), whose sum is σ = 184297920. Its totient is φ = 82933992.

The previous prime is 131312201. The next prime is 131312213. The reversal of 131312211 is 112213131.

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 131312211 - 2⁶ = 131312147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131312213) 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, 1151805 + ... + 1151918.

It is an arithmetic number, because the mean of its divisors is an integer number (23037240).

Almost surely, 2^131312211 is an apocalyptic number.

131312211 is a deficient number, since it is larger than the sum of its proper divisors (52985709).

131312211 is a wasteful number, since it uses less digits than its factorization.

131312211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303745.

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

The square root of 131312211 is about 11459.1540263669. The cubic root of 131312211 is about 508.2784591009.

Adding to 131312211 its reverse (112213131), we get a palindrome (243525342).

The spelling of 131312211 in words is "one hundred thirty-one million, three hundred twelve thousand, two hundred eleven".