12312130133 has 8 divisors (see below), whose sum is σ = 13057650648. Its totient is φ = 11568973824.

The previous prime is 12312130109. The next prime is 12312130147. The reversal of 12312130133 is 33103121321.

It can be written as a sum of positive squares in 4 ways, for example, as 1054495729 + 11257634404 = 32473^2 + 106102^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12312130133 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 (12312130153) 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 7 ways as a sum of consecutive naturals, for example, 580316 + ... + 601157.

It is an arithmetic number, because the mean of its divisors is an integer number (1632206331).

Almost surely, 2^12312130133 is an apocalyptic number.

It is an amenable number.

12312130133 is a deficient number, since it is larger than the sum of its proper divisors (745520515).

12312130133 is a wasteful number, since it uses less digits than its factorization.

12312130133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182103.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12312130133 its reverse (33103121321), we get a palindrome (45415251454).

The spelling of 12312130133 in words is "twelve billion, three hundred twelve million, one hundred thirty thousand, one hundred thirty-three".