228137443 has 2 divisors, whose sum is σ = 228137444. Its totient is φ = 228137442.

The previous prime is 228137431. The next prime is 228137521. The reversal of 228137443 is 344731822.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228137443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228137399 and 228137408.

It is not a weakly prime, because it can be changed into another prime (228137423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114068721 + 114068722.

It is an arithmetic number, because the mean of its divisors is an integer number (114068722).

Almost surely, 2^228137443 is an apocalyptic number.

228137443 is a deficient number, since it is larger than the sum of its proper divisors (1).

228137443 is an equidigital number, since it uses as much as digits as its factorization.

228137443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 228137443 is about 15104.2193773793. The cubic root of 228137443 is about 611.0342063579.

The spelling of 228137443 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, four hundred forty-three".