131365211 has 4 divisors (see below), whose sum is σ = 133591800. Its totient is φ = 129138624.

The previous prime is 131365187. The next prime is 131365219. The reversal of 131365211 is 112563131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112563131 = 659 ⋅170809.

It is a cyclic number.

It is not a de Polignac number, because 131365211 - 2¹⁰ = 131364187 is a prime.

It is a super-2 number, since 2×131365211² = 34513637322149042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131365219) 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, 1113206 + ... + 1113323.

It is an arithmetic number, because the mean of its divisors is an integer number (33397950).

Almost surely, 2^131365211 is an apocalyptic number.

131365211 is a deficient number, since it is larger than the sum of its proper divisors (2226589).

131365211 is an equidigital number, since it uses as much as digits as its factorization.

131365211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226588.

The product of its digits is 540, while the sum is 23.

The square root of 131365211 is about 11461.4663547035. The cubic root of 131365211 is about 508.3468333839.

The spelling of 131365211 in words is "one hundred thirty-one million, three hundred sixty-five thousand, two hundred eleven".