312113013211 has 4 divisors (see below), whose sum is σ = 313178245632. Its totient is φ = 311047780792.

The previous prime is 312113013133. The next prime is 312113013229. The reversal of 312113013211 is 112310311213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112310311213 = 103 ⋅1090391371.

It is a cyclic number.

It is not a de Polignac number, because 312113013211 - 2⁷ = 312113013083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312113013011) 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 3 ways as a sum of consecutive naturals, for example, 532615771 + ... + 532616356.

It is an arithmetic number, because the mean of its divisors is an integer number (78294561408).

Almost surely, 2^312113013211 is an apocalyptic number.

312113013211 is a deficient number, since it is larger than the sum of its proper divisors (1065232421).

312113013211 is a wasteful number, since it uses less digits than its factorization.

312113013211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065232420.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 312113013211 its reverse (112310311213), we get a palindrome (424423324424).

The spelling of 312113013211 in words is "three hundred twelve billion, one hundred thirteen million, thirteen thousand, two hundred eleven".