12303031311 has 48 divisors (see below), whose sum is σ = 18739244160. Its totient is φ = 7767144000.

The previous prime is 12303031303. The next prime is 12303031327. The reversal of 12303031311 is 11313030321.

It is a happy number.

12303031311 is a `hidden beast` number, since 1 + 230 + 303 + 131 + 1 = 666.

It is not a de Polignac number, because 12303031311 - 2³ = 12303031303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303036311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4387836 + ... + 4390638.

It is an arithmetic number, because the mean of its divisors is an integer number (390400920).

Almost surely, 2^12303031311 is an apocalyptic number.

12303031311 is a deficient number, since it is larger than the sum of its proper divisors (6436212849).

12303031311 is a wasteful number, since it uses less digits than its factorization.

12303031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 12303031311 its reverse (11313030321), we get a palindrome (23616061632).

The spelling of 12303031311 in words is "twelve billion, three hundred three million, thirty-one thousand, three hundred eleven".