312242422 has 4 divisors (see below), whose sum is σ = 468363636. Its totient is φ = 156121210.

The previous prime is 312242419. The next prime is 312242443. The reversal of 312242422 is 224242213.

312242422 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 312242393 and 312242402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78060604 + ... + 78060607.

It is an arithmetic number, because the mean of its divisors is an integer number (117090909).

Almost surely, 2^312242422 is an apocalyptic number.

312242422 is a deficient number, since it is larger than the sum of its proper divisors (156121214).

312242422 is a wasteful number, since it uses less digits than its factorization.

312242422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156121213.

The product of its digits is 1536, while the sum is 22.

The square root of 312242422 is about 17670.3826217770. The cubic root of 312242422 is about 678.4179064296.

Adding to 312242422 its reverse (224242213), we get a palindrome (536484635).

The spelling of 312242422 in words is "three hundred twelve million, two hundred forty-two thousand, four hundred twenty-two".