228363511 has 4 divisors (see below), whose sum is σ = 230717872. Its totient is φ = 226009152.

The previous prime is 228363503. The next prime is 228363521. The reversal of 228363511 is 115363822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228363511 - 2³ = 228363503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228363521) 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 in 3 ways as a sum of consecutive naturals, for example, 1177035 + ... + 1177228.

It is an arithmetic number, because the mean of its divisors is an integer number (57679468).

Almost surely, 2^228363511 is an apocalyptic number.

228363511 is a deficient number, since it is larger than the sum of its proper divisors (2354361).

228363511 is an equidigital number, since it uses as much as digits as its factorization.

228363511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354360.

The product of its digits is 8640, while the sum is 31.

The square root of 228363511 is about 15111.7011285957. The cubic root of 228363511 is about 611.2359702257.

The spelling of 228363511 in words is "two hundred twenty-eight million, three hundred sixty-three thousand, five hundred eleven".