311120330213213 has 4 divisors (see below), whose sum is σ = 311157075270720. Its totient is φ = 311083585155708.

The previous prime is 311120330213197. The next prime is 311120330213237. The reversal of 311120330213213 is 312312033021113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311120330213213 - 2⁴ = 311120330213197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311120330213713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18372516053 + ... + 18372532986.

It is an arithmetic number, because the mean of its divisors is an integer number (77789268817680).

Almost surely, 2^{311120330213213} is an apocalyptic number.

It is an amenable number.

311120330213213 is a deficient number, since it is larger than the sum of its proper divisors (36745057507).

311120330213213 is an equidigital number, since it uses as much as digits as its factorization.

311120330213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36745057506.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 311120330213213 its reverse (312312033021113), we get a palindrome (623432363234326).

The spelling of 311120330213213 in words is "three hundred eleven trillion, one hundred twenty billion, three hundred thirty million, two hundred thirteen thousand, two hundred thirteen".