63213131228 has 24 divisors (see below), whose sum is σ = 126140231952. Its totient is φ = 27459097344.

The previous prime is 63213131221. The next prime is 63213131231. The reversal of 63213131228 is 82213131236.

It is a junction number, because it is equal to n+sod(n) for n = 63213131194 and 63213131203.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 35753150 + ... + 35754917.

It is an arithmetic number, because the mean of its divisors is an integer number (5255842998).

Almost surely, 2^63213131228 is an apocalyptic number.

63213131228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

63213131228 is a deficient number, since it is larger than the sum of its proper divisors (62927100724).

63213131228 is a wasteful number, since it uses less digits than its factorization.

63213131228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71508101 (or 71508099 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The spelling of 63213131228 in words is "sixty-three billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-eight".