311322003221 has 8 divisors (see below), whose sum is σ = 334554989760. Its totient is φ = 288635675328.

The previous prime is 311322003211. The next prime is 311322003227. The reversal of 311322003221 is 122300223113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311322003221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311322003193 and 311322003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311322003227) 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 in 7 ways as a sum of consecutive naturals, for example, 136663481 + ... + 136665758.

It is an arithmetic number, because the mean of its divisors is an integer number (41819373720).

Almost surely, 2^311322003221 is an apocalyptic number.

It is an amenable number.

311322003221 is a deficient number, since it is larger than the sum of its proper divisors (23232986539).

311322003221 is a wasteful number, since it uses less digits than its factorization.

311322003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273329323.

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

Adding to 311322003221 its reverse (122300223113), we get a palindrome (433622226334).

The spelling of 311322003221 in words is "three hundred eleven billion, three hundred twenty-two million, three thousand, two hundred twenty-one".