311300001230221 has 8 divisors (see below), whose sum is σ = 311956254980280. Its totient is φ = 310644130476288.

The previous prime is 311300001230213. The next prime is 311300001230243. The reversal of 311300001230221 is 122032100003113.

It can be written as a sum of positive squares in 4 ways, for example, as 97537647493225 + 213762353736996 = 9876115^2 + 14620614^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 311300001230221 - 2³ = 311300001230213 is a prime.

It is a super-2 number, since 2×311300001230221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311300001230321) 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, 94121686 + ... + 97372951.

It is an arithmetic number, because the mean of its divisors is an integer number (38994531872535).

Almost surely, 2^{311300001230221} is an apocalyptic number.

It is an amenable number.

311300001230221 is a deficient number, since it is larger than the sum of its proper divisors (656253750059).

311300001230221 is a wasteful number, since it uses less digits than its factorization.

311300001230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191498063.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311300001230221 its reverse (122032100003113), we get a palindrome (433332101233334).

The spelling of 311300001230221 in words is "three hundred eleven trillion, three hundred billion, one million, two hundred thirty thousand, two hundred twenty-one".