63213131227 has 4 divisors (see below), whose sum is σ = 63245566800. Its totient is φ = 63180695656.

The previous prime is 63213131221. The next prime is 63213131231. The reversal of 63213131227 is 72213131236.

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-63213131227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63213131221) 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, 16214863 + ... + 16218760.

It is an arithmetic number, because the mean of its divisors is an integer number (15811391700).

Almost surely, 2^63213131227 is an apocalyptic number.

63213131227 is a deficient number, since it is larger than the sum of its proper divisors (32435573).

63213131227 is a wasteful number, since it uses less digits than its factorization.

63213131227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32435572.

The product of its digits is 9072, while the sum is 31.

Subtracting 63213131227 from its reverse (72213131236), we obtain a palindrome (9000000009).

The spelling of 63213131227 in words is "sixty-three billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-seven".