312211113 has 4 divisors (see below), whose sum is σ = 416281488. Its totient is φ = 208140740.

The previous prime is 312211079. The next prime is 312211139. The reversal of 312211113 is 311112213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312211113 - 2⁶ = 312211049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312211092 and 312211101.

It is not an unprimeable number, because it can be changed into a prime (312211153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52035183 + ... + 52035188.

It is an arithmetic number, because the mean of its divisors is an integer number (104070372).

Almost surely, 2^312211113 is an apocalyptic number.

It is an amenable number.

312211113 is a deficient number, since it is larger than the sum of its proper divisors (104070375).

312211113 is a wasteful number, since it uses less digits than its factorization.

312211113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104070374.

The product of its digits is 36, while the sum is 15.

The square root of 312211113 is about 17669.4966821356. The cubic root of 312211113 is about 678.3952303562.

Adding to 312211113 its reverse (311112213), we get a palindrome (623323326).

The spelling of 312211113 in words is "three hundred twelve million, two hundred eleven thousand, one hundred thirteen".