441131111 has 2 divisors, whose sum is σ = 441131112. Its totient is φ = 441131110.

The previous prime is 441131107. The next prime is 441131123. The reversal of 441131111 is 111131144.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 441131111 - 2² = 441131107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 441131111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441131101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220565555 + 220565556.

It is an arithmetic number, because the mean of its divisors is an integer number (220565556).

Almost surely, 2^441131111 is an apocalyptic number.

441131111 is a deficient number, since it is larger than the sum of its proper divisors (1).

441131111 is an equidigital number, since it uses as much as digits as its factorization.

441131111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 17.

The square root of 441131111 is about 21003.1214584880. The cubic root of 441131111 is about 761.2416861823.

Adding to 441131111 its reverse (111131144), we get a palindrome (552262255).

The spelling of 441131111 in words is "four hundred forty-one million, one hundred thirty-one thousand, one hundred eleven".