63641233231 has 4 divisors (see below), whose sum is σ = 63646777312. Its totient is φ = 63635689152.

The previous prime is 63641233223. The next prime is 63641233259. The reversal of 63641233231 is 13233214636.

63641233231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 63641233231 - 2³ = 63641233223 is a prime.

It is a super-2 number, since 2×63641233231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63641233211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754786 + ... + 2777791.

It is an arithmetic number, because the mean of its divisors is an integer number (15911694328).

Almost surely, 2^63641233231 is an apocalyptic number.

63641233231 is a deficient number, since it is larger than the sum of its proper divisors (5544081).

63641233231 is a wasteful number, since it uses less digits than its factorization.

63641233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544080.

The product of its digits is 46656, while the sum is 34.

Adding to 63641233231 its reverse (13233214636), we get a palindrome (76874447867).

The spelling of 63641233231 in words is "sixty-three billion, six hundred forty-one million, two hundred thirty-three thousand, two hundred thirty-one".