312311443 has 2 divisors, whose sum is σ = 312311444. Its totient is φ = 312311442.

The previous prime is 312311431. The next prime is 312311459. The reversal of 312311443 is 344113213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312311443 is a prime.

It is not a weakly prime, because it can be changed into another prime (312311243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156155721 + 156155722.

It is an arithmetic number, because the mean of its divisors is an integer number (156155722).

Almost surely, 2^312311443 is an apocalyptic number.

312311443 is a deficient number, since it is larger than the sum of its proper divisors (1).

312311443 is an equidigital number, since it uses as much as digits as its factorization.

312311443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 312311443 is about 17672.3355275979. The cubic root of 312311443 is about 678.4678907038.

Adding to 312311443 its reverse (344113213), we get a palindrome (656424656).

The spelling of 312311443 in words is "three hundred twelve million, three hundred eleven thousand, four hundred forty-three".