1228944317 has 2 divisors, whose sum is σ = 1228944318. Its totient is φ = 1228944316.

The previous prime is 1228944293. The next prime is 1228944319. The reversal of 1228944317 is 7134498221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 910892761 + 318051556 = 30181^2 + 17834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228944317 is a prime.

Together with 1228944319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228944319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614472158 + 614472159.

It is an arithmetic number, because the mean of its divisors is an integer number (614472159).

Almost surely, 2^1228944317 is an apocalyptic number.

It is an amenable number.

1228944317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228944317 is an equidigital number, since it uses as much as digits as its factorization.

1228944317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 1228944317 is about 35056.3021010488. The cubic root of 1228944317 is about 1071.1346501545.

The spelling of 1228944317 in words is "one billion, two hundred twenty-eight million, nine hundred forty-four thousand, three hundred seventeen".