247679323 has 2 divisors, whose sum is σ = 247679324. Its totient is φ = 247679322.

The previous prime is 247679321. The next prime is 247679347. The reversal of 247679323 is 323976742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247679323 - 2¹ = 247679321 is a prime.

It is a super-2 number, since 2×247679323² = 122690094083476658, which contains 22 as substring.

Together with 247679321, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 247679323.

It is not a weakly prime, because it can be changed into another prime (247679321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123839661 + 123839662.

It is an arithmetic number, because the mean of its divisors is an integer number (123839662).

Almost surely, 2^247679323 is an apocalyptic number.

247679323 is a deficient number, since it is larger than the sum of its proper divisors (1).

247679323 is an equidigital number, since it uses as much as digits as its factorization.

247679323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 43.

The square root of 247679323 is about 15737.8309496576. The cubic root of 247679323 is about 628.0052156855.

The spelling of 247679323 in words is "two hundred forty-seven million, six hundred seventy-nine thousand, three hundred twenty-three".