311212032223 has 16 divisors (see below), whose sum is σ = 328721889600. Its totient is φ = 294219636480.

The previous prime is 311212032199. The next prime is 311212032239. The reversal of 311212032223 is 322230212113.

It is a cyclic number.

It is not a de Polignac number, because 311212032223 - 2¹³ = 311212024031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311212032194 and 311212032203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311212030223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319488 + ... + 851173.

It is an arithmetic number, because the mean of its divisors is an integer number (20545118100).

Almost surely, 2^311212032223 is an apocalyptic number.

311212032223 is a deficient number, since it is larger than the sum of its proper divisors (17509857377).

311212032223 is a wasteful number, since it uses less digits than its factorization.

311212032223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170882.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 311212032223 its reverse (322230212113), we get a palindrome (633442244336).

The spelling of 311212032223 in words is "three hundred eleven billion, two hundred twelve million, thirty-two thousand, two hundred twenty-three".