30312311311 has 4 divisors (see below), whose sum is σ = 30323611912. Its totient is φ = 30301010712.

The previous prime is 30312311279. The next prime is 30312311327. The reversal of 30312311311 is 11311321303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11311321303 = 271 ⋅41739193.

It is a cyclic number.

It is not a de Polignac number, because 30312311311 - 2⁵ = 30312311279 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 (30312311011) 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, 5646276 + ... + 5651641.

It is an arithmetic number, because the mean of its divisors is an integer number (7580902978).

Almost surely, 2^30312311311 is an apocalyptic number.

30312311311 is a deficient number, since it is larger than the sum of its proper divisors (11300601).

30312311311 is a wasteful number, since it uses less digits than its factorization.

30312311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11300600.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 30312311311 its reverse (11311321303), we get a palindrome (41623632614).

The spelling of 30312311311 in words is "thirty billion, three hundred twelve million, three hundred eleven thousand, three hundred eleven".