312023113211 has 4 divisors (see below), whose sum is σ = 315782427912. Its totient is φ = 308263798512.

The previous prime is 312023113201. The next prime is 312023113217. The reversal of 312023113211 is 112311320213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112311320213 = 41 ⋅2739300493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312023113211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312023113217) 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, 1879657226 + ... + 1879657391.

It is an arithmetic number, because the mean of its divisors is an integer number (78945606978).

Almost surely, 2^312023113211 is an apocalyptic number.

312023113211 is a deficient number, since it is larger than the sum of its proper divisors (3759314701).

312023113211 is an equidigital number, since it uses as much as digits as its factorization.

312023113211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759314700.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312023113211 its reverse (112311320213), we get a palindrome (424334433424).

It can be divided in two parts, 31202 and 3113211, that added together give a palindrome (3144413).

The spelling of 312023113211 in words is "three hundred twelve billion, twenty-three million, one hundred thirteen thousand, two hundred eleven".