228211783 has 2 divisors, whose sum is σ = 228211784. Its totient is φ = 228211782.

The previous prime is 228211751. The next prime is 228211889. The reversal of 228211783 is 387112822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228211783 - 2⁵ = 228211751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228211703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114105891 + 114105892.

It is an arithmetic number, because the mean of its divisors is an integer number (114105892).

Almost surely, 2^228211783 is an apocalyptic number.

228211783 is a deficient number, since it is larger than the sum of its proper divisors (1).

228211783 is an equidigital number, since it uses as much as digits as its factorization.

228211783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 228211783 is about 15106.6800786937. The cubic root of 228211783 is about 611.1005689115.

The spelling of 228211783 in words is "two hundred twenty-eight million, two hundred eleven thousand, seven hundred eighty-three".