131996211 has 32 divisors (see below), whose sum is σ = 197510400. Its totient is φ = 77921280.

The previous prime is 131996209. The next prime is 131996219. The reversal of 131996211 is 112699131.

It is not a de Polignac number, because 131996211 - 2¹ = 131996209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131996219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173071 + ... + 173831.

It is an arithmetic number, because the mean of its divisors is an integer number (6172200).

Almost surely, 2^131996211 is an apocalyptic number.

131996211 is a deficient number, since it is larger than the sum of its proper divisors (65514189).

131996211 is a wasteful number, since it uses less digits than its factorization.

131996211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its digits is 2916, while the sum is 33.

The square root of 131996211 is about 11488.9603968331. The cubic root of 131996211 is about 509.1594651424.

The spelling of 131996211 in words is "one hundred thirty-one million, nine hundred ninety-six thousand, two hundred eleven".