312320111 has 4 divisors (see below), whose sum is σ = 323089800. Its totient is φ = 301550424.

The previous prime is 312320093. The next prime is 312320131. The reversal of 312320111 is 111023213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312320111 - 2¹⁴ = 312303727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312320131) 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, 5384801 + ... + 5384858.

It is an arithmetic number, because the mean of its divisors is an integer number (80772450).

Almost surely, 2^312320111 is an apocalyptic number.

312320111 is a deficient number, since it is larger than the sum of its proper divisors (10769689).

312320111 is a wasteful number, since it uses less digits than its factorization.

312320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10769688.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 312320111 is about 17672.5807679580. The cubic root of 312320111 is about 678.4741674567.

Adding to 312320111 its reverse (111023213), we get a palindrome (423343324).

The spelling of 312320111 in words is "three hundred twelve million, three hundred twenty thousand, one hundred eleven".