312221321030 has 32 divisors (see below), whose sum is σ = 565460275968. Its totient is φ = 124121088000.

The previous prime is 312221320951. The next prime is 312221321063. The reversal of 312221321030 is 30123122213.

It is a junction number, because it is equal to n+sod(n) for n = 312221320993 and 312221321011.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1223750 + ... + 1456710.

It is an arithmetic number, because the mean of its divisors is an integer number (17670633624).

Almost surely, 2^312221321030 is an apocalyptic number.

312221321030 is a deficient number, since it is larger than the sum of its proper divisors (253238954938).

312221321030 is a wasteful number, since it uses less digits than its factorization.

312221321030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233792.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312221321030 its reverse (30123122213), we get a palindrome (342344443243).

The spelling of 312221321030 in words is "three hundred twelve billion, two hundred twenty-one million, three hundred twenty-one thousand, thirty".