641123353 has 4 divisors (see below), whose sum is σ = 690440548. Its totient is φ = 591806160.

The previous prime is 641123347. The next prime is 641123393. The reversal of 641123353 is 353321146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173396224 + 467727129 = 13168^2 + 21627^2 .

It is a cyclic number.

It is not a de Polignac number, because 641123353 - 2¹⁷ = 640992281 is a prime.

It is a super-2 number, since 2×641123353² = 822078307523925218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641123393) 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 in 3 ways as a sum of consecutive naturals, for example, 24658578 + ... + 24658603.

It is an arithmetic number, because the mean of its divisors is an integer number (172610137).

Almost surely, 2^641123353 is an apocalyptic number.

It is an amenable number.

641123353 is a deficient number, since it is larger than the sum of its proper divisors (49317195).

641123353 is a wasteful number, since it uses less digits than its factorization.

641123353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49317194.

The product of its digits is 6480, while the sum is 28.

The square root of 641123353 is about 25320.4137604424. The cubic root of 641123353 is about 862.2777876892.

Adding to 641123353 its reverse (353321146), we get a palindrome (994444499).

The spelling of 641123353 in words is "six hundred forty-one million, one hundred twenty-three thousand, three hundred fifty-three".