312132212011 has 4 divisors (see below), whose sum is σ = 313026574000. Its totient is φ = 311237850024.

The previous prime is 312132211991. The next prime is 312132212081. The reversal of 312132212011 is 110212231213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110212231213 = 7 ⋅15744604459.

It is a cyclic number.

It is not a de Polignac number, because 312132212011 - 2¹⁵ = 312132179243 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 312132212011.

It is not an unprimeable number, because it can be changed into a prime (312132212081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447180471 + ... + 447181168.

It is an arithmetic number, because the mean of its divisors is an integer number (78256643500).

Almost surely, 2^312132212011 is an apocalyptic number.

312132212011 is a deficient number, since it is larger than the sum of its proper divisors (894361989).

312132212011 is an equidigital number, since it uses as much as digits as its factorization.

312132212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894361988.

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

Adding to 312132212011 its reverse (110212231213), we get a palindrome (422344443224).

The spelling of 312132212011 in words is "three hundred twelve billion, one hundred thirty-two million, two hundred twelve thousand, eleven".