228973111 has 2 divisors, whose sum is σ = 228973112. Its totient is φ = 228973110.

The previous prime is 228973079. The next prime is 228973133. The reversal of 228973111 is 111379822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228973111 - 2⁵ = 228973079 is a prime.

It is a super-2 number, since 2×228973111² = 104857371122036642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228973411) 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, 114486555 + 114486556.

It is an arithmetic number, because the mean of its divisors is an integer number (114486556).

Almost surely, 2^228973111 is an apocalyptic number.

228973111 is a deficient number, since it is larger than the sum of its proper divisors (1).

228973111 is an equidigital number, since it uses as much as digits as its factorization.

228973111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 228973111 is about 15131.8574867727. The cubic root of 228973111 is about 611.7793705048.

The spelling of 228973111 in words is "two hundred twenty-eight million, nine hundred seventy-three thousand, one hundred eleven".