641030111 has 8 divisors (see below), whose sum is σ = 657127680. Its totient is φ = 624986712.

The previous prime is 641030107. The next prime is 641030141. The reversal of 641030111 is 111030146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641030111 - 2² = 641030107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641030111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641030141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10970 + ... + 37448.

It is an arithmetic number, because the mean of its divisors is an integer number (82140960).

Almost surely, 2^641030111 is an apocalyptic number.

641030111 is a deficient number, since it is larger than the sum of its proper divisors (16097569).

641030111 is a wasteful number, since it uses less digits than its factorization.

641030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27085.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 641030111 is about 25318.5724518583. The cubic root of 641030111 is about 862.2359837716.

Adding to 641030111 its reverse (111030146), we get a palindrome (752060257).

The spelling of 641030111 in words is "six hundred forty-one million, thirty thousand, one hundred eleven".