12123130311 has 12 divisors (see below), whose sum is σ = 17671842760. Its totient is φ = 8007938640.

The previous prime is 12123130267. The next prime is 12123130363. The reversal of 12123130311 is 11303132121.

12123130311 is a `hidden beast` number, since 121 + 231 + 3 + 0 + 311 = 666.

It is not a de Polignac number, because 12123130311 - 2²¹ = 12121033159 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 (12123130381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6177985 + ... + 6179946.

Almost surely, 2^12123130311 is an apocalyptic number.

12123130311 is a deficient number, since it is larger than the sum of its proper divisors (5548712449).

12123130311 is a wasteful number, since it uses less digits than its factorization.

12123130311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358046 (or 12358043 counting only the distinct ones).

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

Adding to 12123130311 its reverse (11303132121), we get a palindrome (23426262432).

The spelling of 12123130311 in words is "twelve billion, one hundred twenty-three million, one hundred thirty thousand, three hundred eleven".