641143133 has 2 divisors, whose sum is σ = 641143134. Its totient is φ = 641143132.

The previous prime is 641143127. The next prime is 641143169. The reversal of 641143133 is 331341146.

641143133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 597411364 + 43731769 = 24442^2 + 6613^2 .

It is a cyclic number.

It is not a de Polignac number, because 641143133 - 2⁸ = 641142877 is a prime.

It is a super-2 number, since 2×641143133² = 822129033986111378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641143103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320571566 + 320571567.

It is an arithmetic number, because the mean of its divisors is an integer number (320571567).

Almost surely, 2^641143133 is an apocalyptic number.

It is an amenable number.

641143133 is a deficient number, since it is larger than the sum of its proper divisors (1).

641143133 is an equidigital number, since it uses as much as digits as its factorization.

641143133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 641143133 is about 25320.8043513629. The cubic root of 641143133 is about 862.2866552907.

Adding to 641143133 its reverse (331341146), we get a palindrome (972484279).

The spelling of 641143133 in words is "six hundred forty-one million, one hundred forty-three thousand, one hundred thirty-three".