441231191 has 2 divisors, whose sum is σ = 441231192. Its totient is φ = 441231190.

The previous prime is 441231157. The next prime is 441231229. The reversal of 441231191 is 191132144.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 441231191 - 2¹⁸ = 440969047 is a prime.

It is a super-2 number, since 2×441231191² = 389369927822556962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 441231191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441231151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220615595 + 220615596.

It is an arithmetic number, because the mean of its divisors is an integer number (220615596).

Almost surely, 2^441231191 is an apocalyptic number.

441231191 is a deficient number, since it is larger than the sum of its proper divisors (1).

441231191 is an equidigital number, since it uses as much as digits as its factorization.

441231191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 441231191 is about 21005.5038263785. The cubic root of 441231191 is about 761.2992497996.

The spelling of 441231191 in words is "four hundred forty-one million, two hundred thirty-one thousand, one hundred ninety-one".