312212333321243 has 16 divisors (see below), whose sum is σ = 312987824514144. Its totient is φ = 311437567883520.

The previous prime is 312212333321221. The next prime is 312212333321267. The reversal of 312212333321243 is 342123333212213.

It is a cyclic number.

It is not a de Polignac number, because 312212333321243 - 2¹⁶ = 312212333255707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312212333321293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7682936921 + ... + 7682977557.

It is an arithmetic number, because the mean of its divisors is an integer number (19561739032134).

Almost surely, 2^{312212333321243} is an apocalyptic number.

312212333321243 is a deficient number, since it is larger than the sum of its proper divisors (775491192901).

312212333321243 is a wasteful number, since it uses less digits than its factorization.

312212333321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49102.

The product of its digits is 93312, while the sum is 35.

Adding to 312212333321243 its reverse (342123333212213), we get a palindrome (654335666533456).

The spelling of 312212333321243 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred thirty-three million, three hundred twenty-one thousand, two hundred forty-three".