312201222042343 has 4 divisors (see below), whose sum is σ = 312605104607208. Its totient is φ = 311797339477480.

The previous prime is 312201222042271. The next prime is 312201222042361. The reversal of 312201222042343 is 343240222102213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312201222042343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312201222022343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201941281273 + ... + 201941282818.

It is an arithmetic number, because the mean of its divisors is an integer number (78151276151802).

Almost surely, 2^{312201222042343} is an apocalyptic number.

312201222042343 is a deficient number, since it is larger than the sum of its proper divisors (403882564865).

312201222042343 is an equidigital number, since it uses as much as digits as its factorization.

312201222042343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403882564864.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 312201222042343 its reverse (343240222102213), we get a palindrome (655441444144556).

The spelling of 312201222042343 in words is "three hundred twelve trillion, two hundred one billion, two hundred twenty-two million, forty-two thousand, three hundred forty-three".