12312331011 has 24 divisors (see below), whose sum is σ = 18374594784. Its totient is φ = 7938518400.

The previous prime is 12312331007. The next prime is 12312331013. The reversal of 12312331011 is 11013321321.

12312331011 is a `hidden beast` number, since 12 + 312 + 331 + 0 + 11 = 666.

It is not a de Polignac number, because 12312331011 - 2² = 12312331007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12312331013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55090 + ... + 166311.

It is an arithmetic number, because the mean of its divisors is an integer number (765608116).

Almost surely, 2^12312331011 is an apocalyptic number.

12312331011 is a deficient number, since it is larger than the sum of its proper divisors (6062263773).

12312331011 is a wasteful number, since it uses less digits than its factorization.

12312331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221611 (or 221608 counting only the distinct ones).

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

Adding to 12312331011 its reverse (11013321321), we get a palindrome (23325652332).

The spelling of 12312331011 in words is "twelve billion, three hundred twelve million, three hundred thirty-one thousand, eleven".