312023121111 has 32 divisors (see below), whose sum is σ = 519458795520. Its totient is φ = 183665778912.

The previous prime is 312023121077. The next prime is 312023121121. The reversal of 312023121111 is 111121320213.

312023121111 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 312023121111 - 2¹¹ = 312023119063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312023121121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19317031 + ... + 19333176.

It is an arithmetic number, because the mean of its divisors is an integer number (16233087360).

Almost surely, 2^312023121111 is an apocalyptic number.

312023121111 is a deficient number, since it is larger than the sum of its proper divisors (207435674409).

312023121111 is a wasteful number, since it uses less digits than its factorization.

312023121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38650252 (or 38650246 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 312023121111 its reverse (111121320213), we get a palindrome (423144441324).

The spelling of 312023121111 in words is "three hundred twelve billion, twenty-three million, one hundred twenty-one thousand, one hundred eleven".