2228720323 has 2 divisors, whose sum is σ = 2228720324. Its totient is φ = 2228720322.

The previous prime is 2228720303. The next prime is 2228720327. The reversal of 2228720323 is 3230278222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2228720323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2228720327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114360161 + 1114360162.

It is an arithmetic number, because the mean of its divisors is an integer number (1114360162).

Almost surely, 2^2228720323 is an apocalyptic number.

2228720323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2228720323 is an equidigital number, since it uses as much as digits as its factorization.

2228720323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 2228720323 is about 47209.3245344604. The cubic root of 2228720323 is about 1306.2266028241.

Adding to 2228720323 its reverse (3230278222), we get a palindrome (5458998545).

The spelling of 2228720323 in words is "two billion, two hundred twenty-eight million, seven hundred twenty thousand, three hundred twenty-three".