312223222009943 has 2 divisors, whose sum is σ = 312223222009944. Its totient is φ = 312223222009942.

The previous prime is 312223222009921. The next prime is 312223222010059. The reversal of 312223222009943 is 349900222322213.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (349900222322213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312223222009943 - 2⁶ = 312223222009879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312223222009894 and 312223222009903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312223222069943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156111611004971 + 156111611004972.

It is an arithmetic number, because the mean of its divisors is an integer number (156111611004972).

Almost surely, 2^{312223222009943} is an apocalyptic number.

312223222009943 is a deficient number, since it is larger than the sum of its proper divisors (1).

312223222009943 is an equidigital number, since it uses as much as digits as its factorization.

312223222009943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 312223222009943 in words is "three hundred twelve trillion, two hundred twenty-three billion, two hundred twenty-two million, nine thousand, nine hundred forty-three".