641311053 has 16 divisors (see below), whose sum is σ = 876972096. Its totient is φ = 416620160.

The previous prime is 641311051. The next prime is 641311081. The reversal of 641311053 is 350113146.

It is a cyclic number.

It is not a de Polignac number, because 641311053 - 2¹ = 641311051 is a prime.

It is a super-2 number, since 2×641311053² = 822559733399937618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641311051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122026 + ... + 127172.

It is an arithmetic number, because the mean of its divisors is an integer number (54810756).

Almost surely, 2^641311053 is an apocalyptic number.

It is an amenable number.

641311053 is a deficient number, since it is larger than the sum of its proper divisors (235661043).

641311053 is a wasteful number, since it uses less digits than its factorization.

641311053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 641311053 is about 25324.1199847102. The cubic root of 641311053 is about 862.3619284129.

Adding to 641311053 its reverse (350113146), we get a palindrome (991424199).

The spelling of 641311053 in words is "six hundred forty-one million, three hundred eleven thousand, fifty-three".