641340351 has 48 divisors (see below), whose sum is σ = 1014328224. Its totient is φ = 388841472.

The previous prime is 641340341. The next prime is 641340361. The reversal of 641340351 is 153043146.

It is an interprime number because it is at equal distance from previous prime (641340341) and next prime (641340361).

It is not a de Polignac number, because 641340351 - 2⁷ = 641340223 is a prime.

It is a super-2 number, since 2×641340351² = 822634891641606402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641340311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1092280 + ... + 1092866.

It is an arithmetic number, because the mean of its divisors is an integer number (21131838).

Almost surely, 2^641340351 is an apocalyptic number.

641340351 is a deficient number, since it is larger than the sum of its proper divisors (372987873).

641340351 is a wasteful number, since it uses less digits than its factorization.

641340351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 641340351 is about 25324.6984384810. The cubic root of 641340351 is about 862.3750604154.

Adding to 641340351 its reverse (153043146), we get a palindrome (794383497).

It can be divided in two parts, 6413 and 40351, that added together give a palindrome (46764).

The spelling of 641340351 in words is "six hundred forty-one million, three hundred forty thousand, three hundred fifty-one".