63000220631 has 4 divisors (see below), whose sum is σ = 63002063592. Its totient is φ = 62998377672.

The previous prime is 63000220609. The next prime is 63000220637. The reversal of 63000220631 is 13602200036.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63000220631 is a prime.

It is a super-2 number, since 2×63000220631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63000220597 and 63000220606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63000220637) 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, 869216 + ... + 938901.

It is an arithmetic number, because the mean of its divisors is an integer number (15750515898).

Almost surely, 2^63000220631 is an apocalyptic number.

63000220631 is a deficient number, since it is larger than the sum of its proper divisors (1842961).

63000220631 is a wasteful number, since it uses less digits than its factorization.

63000220631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842960.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 63000220631 its reverse (13602200036), we get a palindrome (76602420667).

The spelling of 63000220631 in words is "sixty-three billion, two hundred twenty thousand, six hundred thirty-one".