4221031312 has 10 divisors (see below), whose sum is σ = 8178248198. Its totient is φ = 2110515648.

The previous prime is 4221031271. The next prime is 4221031313. The reversal of 4221031312 is 2131301224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3161138176 + 1059893136 = 56224^2 + 32556^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4221031312.

It is not an unprimeable number, because it can be changed into a prime (4221031313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131907213 + ... + 131907244.

Almost surely, 2^4221031312 is an apocalyptic number.

It is an amenable number.

4221031312 is a deficient number, since it is larger than the sum of its proper divisors (3957216886).

4221031312 is a wasteful number, since it uses less digits than its factorization.

4221031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263814465 (or 263814459 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4221031312 is about 64969.4644583130. The cubic root of 4221031312 is about 1616.1172206084.

Adding to 4221031312 its reverse (2131301224), we get a palindrome (6352332536).

The spelling of 4221031312 in words is "four billion, two hundred twenty-one million, thirty-one thousand, three hundred twelve".