641311530523 has 2 divisors, whose sum is σ = 641311530524. Its totient is φ = 641311530522.

The previous prime is 641311530499. The next prime is 641311530547. The reversal of 641311530523 is 325035113146.

It is a balanced prime because it is at equal distance from previous prime (641311530499) and next prime (641311530547).

It is a cyclic number.

It is not a de Polignac number, because 641311530523 - 2⁹ = 641311530011 is a prime.

It is a super-2 number, since 2×641311530523² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641311530823) 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 as a sum of consecutive naturals, namely, 320655765261 + 320655765262.

It is an arithmetic number, because the mean of its divisors is an integer number (320655765262).

Almost surely, 2^641311530523 is an apocalyptic number.

641311530523 is a deficient number, since it is larger than the sum of its proper divisors (1).

641311530523 is an equidigital number, since it uses as much as digits as its factorization.

641311530523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 641311530523 its reverse (325035113146), we get a palindrome (966346643669).

The spelling of 641311530523 in words is "six hundred forty-one billion, three hundred eleven million, five hundred thirty thousand, five hundred twenty-three".