312103222 has 4 divisors (see below), whose sum is σ = 468154836. Its totient is φ = 156051610.

The previous prime is 312103217. The next prime is 312103229. The reversal of 312103222 is 222301213.

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

It is a junction number, because it is equal to n+sod(n) for n = 312103196 and 312103205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312103229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78025804 + ... + 78025807.

It is an arithmetic number, because the mean of its divisors is an integer number (117038709).

Almost surely, 2^312103222 is an apocalyptic number.

312103222 is a deficient number, since it is larger than the sum of its proper divisors (156051614).

312103222 is a wasteful number, since it uses less digits than its factorization.

312103222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156051613.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312103222 is about 17666.4433885262. The cubic root of 312103222 is about 678.3170768574.

Adding to 312103222 its reverse (222301213), we get a palindrome (534404435).

The spelling of 312103222 in words is "three hundred twelve million, one hundred three thousand, two hundred twenty-two".