312221113130 has 32 divisors (see below), whose sum is σ = 564017202000. Its totient is φ = 124440256512.

The previous prime is 312221113103. The next prime is 312221113133. The reversal of 312221113130 is 31311122213.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 11657304961 + 300563808169 = 107969^2 + 548237^2 .

It is not an unprimeable number, because it can be changed into a prime (312221113133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4885664 + ... + 4949156.

Almost surely, 2^312221113130 is an apocalyptic number.

312221113130 is a deficient number, since it is larger than the sum of its proper divisors (251796088870).

312221113130 is a wasteful number, since it uses less digits than its factorization.

312221113130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65258.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312221113130 its reverse (31311122213), we get a palindrome (343532235343).

The spelling of 312221113130 in words is "three hundred twelve billion, two hundred twenty-one million, one hundred thirteen thousand, one hundred thirty".