312243443 has 4 divisors (see below), whose sum is σ = 312405600. Its totient is φ = 312081288.

The previous prime is 312243401. The next prime is 312243457. The reversal of 312243443 is 344342213.

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

It is a cyclic number.

It is not a de Polignac number, because 312243443 - 2¹⁰ = 312242419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312243143) 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, 78155 + ... + 82052.

It is an arithmetic number, because the mean of its divisors is an integer number (78101400).

Almost surely, 2^312243443 is an apocalyptic number.

312243443 is a deficient number, since it is larger than the sum of its proper divisors (162157).

312243443 is a wasteful number, since it uses less digits than its factorization.

312243443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162156.

The product of its digits is 6912, while the sum is 26.

The square root of 312243443 is about 17670.4115119032. The cubic root of 312243443 is about 678.4186458806.

Adding to 312243443 its reverse (344342213), we get a palindrome (656585656).

The spelling of 312243443 in words is "three hundred twelve million, two hundred forty-three thousand, four hundred forty-three".