312223113211 has 4 divisors (see below), whose sum is σ = 330589178712. Its totient is φ = 293857047712.

The previous prime is 312223113193. The next prime is 312223113263. The reversal of 312223113211 is 112311322213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112311322213 = 169307 ⋅663359.

It is a cyclic number.

It is not a de Polignac number, because 312223113211 - 2¹¹ = 312223111163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312223114211) 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, 9183032725 + ... + 9183032758.

It is an arithmetic number, because the mean of its divisors is an integer number (82647294678).

Almost surely, 2^312223113211 is an apocalyptic number.

312223113211 is a deficient number, since it is larger than the sum of its proper divisors (18366065501).

312223113211 is a wasteful number, since it uses less digits than its factorization.

312223113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366065500.

The product of its digits is 432, while the sum is 22.

Adding to 312223113211 its reverse (112311322213), we get a palindrome (424534435424).

The spelling of 312223113211 in words is "three hundred twelve billion, two hundred twenty-three million, one hundred thirteen thousand, two hundred eleven".