2231210191 has 4 divisors (see below), whose sum is σ = 2549954512. Its totient is φ = 1912465872.

The previous prime is 2231210183. The next prime is 2231210227. The reversal of 2231210191 is 1910121322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1910121322 = 2 ⋅955060661.

It is a cyclic number.

It is not a de Polignac number, because 2231210191 - 2³ = 2231210183 is a prime.

It is a super-3 number, since 3×2231210191³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231210161) 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, 159372150 + ... + 159372163.

It is an arithmetic number, because the mean of its divisors is an integer number (637488628).

Almost surely, 2^2231210191 is an apocalyptic number.

2231210191 is a deficient number, since it is larger than the sum of its proper divisors (318744321).

2231210191 is an equidigital number, since it uses as much as digits as its factorization.

2231210191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318744320.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 2231210191 is about 47235.6876842076. The cubic root of 2231210191 is about 1306.7128491836.

The spelling of 2231210191 in words is "two billion, two hundred thirty-one million, two hundred ten thousand, one hundred ninety-one".