312321443 has 6 divisors (see below), whose sum is σ = 363312756. Its totient is φ = 267704052.

The previous prime is 312321431. The next prime is 312321461. The reversal of 312321443 is 344123213.

It is not a de Polignac number, because 312321443 - 2¹⁰ = 312320419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312321413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3186905 + ... + 3187002.

It is an arithmetic number, because the mean of its divisors is an integer number (60552126).

Almost surely, 2^312321443 is an apocalyptic number.

312321443 is a deficient number, since it is larger than the sum of its proper divisors (50991313).

312321443 is an equidigital number, since it uses as much as digits as its factorization.

312321443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373921 (or 6373914 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 312321443 is about 17672.6184534154. The cubic root of 312321443 is about 678.4751319866.

Adding to 312321443 its reverse (344123213), we get a palindrome (656444656).

The spelling of 312321443 in words is "three hundred twelve million, three hundred twenty-one thousand, four hundred forty-three".