312242443 has 2 divisors, whose sum is σ = 312242444. Its totient is φ = 312242442.

The previous prime is 312242419. The next prime is 312242459. The reversal of 312242443 is 344242213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312242443 - 2⁹ = 312241931 is a prime.

It is not a weakly prime, because it can be changed into another prime (312242473) 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, 156121221 + 156121222.

It is an arithmetic number, because the mean of its divisors is an integer number (156121222).

Almost surely, 2^312242443 is an apocalyptic number.

312242443 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242443 is an equidigital number, since it uses as much as digits as its factorization.

312242443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

The square root of 312242443 is about 17670.3832159917. The cubic root of 312242443 is about 678.4179216387.

Adding to 312242443 its reverse (344242213), we get a palindrome (656484656).

The spelling of 312242443 in words is "three hundred twelve million, two hundred forty-two thousand, four hundred forty-three".