318212723 has 2 divisors, whose sum is σ = 318212724. Its totient is φ = 318212722.

The previous prime is 318212651. The next prime is 318212731. The reversal of 318212723 is 327212813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318212723 - 2²⁰ = 317164147 is a prime.

It is not a weakly prime, because it can be changed into another prime (318212753) 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, 159106361 + 159106362.

It is an arithmetic number, because the mean of its divisors is an integer number (159106362).

Almost surely, 2^318212723 is an apocalyptic number.

318212723 is a deficient number, since it is larger than the sum of its proper divisors (1).

318212723 is an equidigital number, since it uses as much as digits as its factorization.

318212723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 318212723 is about 17838.5179597409. The cubic root of 318212723 is about 682.7145835568.

The spelling of 318212723 in words is "three hundred eighteen million, two hundred twelve thousand, seven hundred twenty-three".