312311223 has 12 divisors (see below), whose sum is σ = 515561488. Its totient is φ = 178463520.

The previous prime is 312311183. The next prime is 312311239. The reversal of 312311223 is 322113213.

It is not a de Polignac number, because 312311223 - 2⁸ = 312310967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312311196 and 312311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2478598 + ... + 2478723.

Almost surely, 2^312311223 is an apocalyptic number.

312311223 is a deficient number, since it is larger than the sum of its proper divisors (203250265).

312311223 is a wasteful number, since it uses less digits than its factorization.

312311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4957334 (or 4957331 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 312311223 is about 17672.3293031790. The cubic root of 312311223 is about 678.4677313938.

Adding to 312311223 its reverse (322113213), we get a palindrome (634424436).

The spelling of 312311223 in words is "three hundred twelve million, three hundred eleven thousand, two hundred twenty-three".