228106231 has 2 divisors, whose sum is σ = 228106232. Its totient is φ = 228106230.

The previous prime is 228106211. The next prime is 228106237. The reversal of 228106231 is 132601822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228106231 - 2¹⁵ = 228073463 is a prime.

It is a super-2 number, since 2×228106231² = 104064905242050722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228106196 and 228106205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228106237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114053115 + 114053116.

It is an arithmetic number, because the mean of its divisors is an integer number (114053116).

Almost surely, 2^228106231 is an apocalyptic number.

228106231 is a deficient number, since it is larger than the sum of its proper divisors (1).

228106231 is an equidigital number, since it uses as much as digits as its factorization.

228106231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 228106231 is about 15103.1861208157. The cubic root of 228106231 is about 611.0063394294.

The spelling of 228106231 in words is "two hundred twenty-eight million, one hundred six thousand, two hundred thirty-one".