30312121311 has 6 divisors (see below), whose sum is σ = 43784175240. Its totient is φ = 20208080868.

The previous prime is 30312121289. The next prime is 30312121321. The reversal of 30312121311 is 11312121303.

30312121311 is a `hidden beast` number, since 30 + 312 + 12 + 1 + 311 = 666.

It is not a de Polignac number, because 30312121311 - 2³¹ = 28164637663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312121321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1684006731 + ... + 1684006748.

It is an arithmetic number, because the mean of its divisors is an integer number (7297362540).

Almost surely, 2^30312121311 is an apocalyptic number.

30312121311 is a deficient number, since it is larger than the sum of its proper divisors (13472053929).

30312121311 is a wasteful number, since it uses less digits than its factorization.

30312121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368013485 (or 3368013482 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 30312121311 its reverse (11312121303), we get a palindrome (41624242614).

The spelling of 30312121311 in words is "thirty billion, three hundred twelve million, one hundred twenty-one thousand, three hundred eleven".