311122030313 has 4 divisors (see below), whose sum is σ = 311123191380. Its totient is φ = 311120869248.

The previous prime is 311122030273. The next prime is 311122030327. The reversal of 311122030313 is 313030221113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 219199066969 + 91922963344 = 468187^2 + 303188^2 .

It is a cyclic number.

It is not a de Polignac number, because 311122030313 - 2¹² = 311122026217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311122030343) 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, 48881 + ... + 790337.

It is an arithmetic number, because the mean of its divisors is an integer number (77780797845).

Almost surely, 2^311122030313 is an apocalyptic number.

It is an amenable number.

311122030313 is a deficient number, since it is larger than the sum of its proper divisors (1161067).

311122030313 is an equidigital number, since it uses as much as digits as its factorization.

311122030313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161066.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 311122030313 its reverse (313030221113), we get a palindrome (624152251426).

The spelling of 311122030313 in words is "three hundred eleven billion, one hundred twenty-two million, thirty thousand, three hundred thirteen".