312232112011 has 4 divisors (see below), whose sum is σ = 312256950232. Its totient is φ = 312207273792.

The previous prime is 312232111937. The next prime is 312232112021. The reversal of 312232112011 is 110211232213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312232112011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312232112011.

It is not an unprimeable number, because it can be changed into a prime (312232112021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12400245 + ... + 12425398.

It is an arithmetic number, because the mean of its divisors is an integer number (78064237558).

Almost surely, 2^312232112011 is an apocalyptic number.

312232112011 is a deficient number, since it is larger than the sum of its proper divisors (24838221).

312232112011 is a wasteful number, since it uses less digits than its factorization.

312232112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24838220.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312232112011 its reverse (110211232213), we get a palindrome (422443344224).

The spelling of 312232112011 in words is "three hundred twelve billion, two hundred thirty-two million, one hundred twelve thousand, eleven".