228111503 has 2 divisors, whose sum is σ = 228111504. Its totient is φ = 228111502.

The previous prime is 228111469. The next prime is 228111509. The reversal of 228111503 is 305111822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228111503 - 2¹⁰ = 228110479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228111509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114055751 + 114055752.

It is an arithmetic number, because the mean of its divisors is an integer number (114055752).

Almost surely, 2^228111503 is an apocalyptic number.

228111503 is a deficient number, since it is larger than the sum of its proper divisors (1).

228111503 is an equidigital number, since it uses as much as digits as its factorization.

228111503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 228111503 is about 15103.3606525170. The cubic root of 228111503 is about 611.0110465938.

The spelling of 228111503 in words is "two hundred twenty-eight million, one hundred eleven thousand, five hundred three".