228326143 has 2 divisors, whose sum is σ = 228326144. Its totient is φ = 228326142.

The previous prime is 228326113. The next prime is 228326159. The reversal of 228326143 is 341623822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228326143 - 2¹³ = 228317951 is a prime.

It is a super-3 number, since 3×228326143³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228326113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114163071 + 114163072.

It is an arithmetic number, because the mean of its divisors is an integer number (114163072).

Almost surely, 2^228326143 is an apocalyptic number.

228326143 is a deficient number, since it is larger than the sum of its proper divisors (1).

228326143 is an equidigital number, since it uses as much as digits as its factorization.

228326143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 228326143 is about 15110.4646851114. The cubic root of 228326143 is about 611.2026287758.

Adding to 228326143 its reverse (341623822), we get a palindrome (569949965).

The spelling of 228326143 in words is "two hundred twenty-eight million, three hundred twenty-six thousand, one hundred forty-three".