228536123 has 16 divisors (see below), whose sum is σ = 249123840. Its totient is φ = 208850400.

The previous prime is 228536111. The next prime is 228536131. The reversal of 228536123 is 321635822.

It is a cyclic number.

It is not a de Polignac number, because 228536123 - 2¹² = 228532027 is a prime.

It is a super-2 number, since 2×228536123² = 104457519031742258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228536123.

It is not an unprimeable number, because it can be changed into a prime (228536723) 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 in 15 ways as a sum of consecutive naturals, for example, 345413 + ... + 346073.

It is an arithmetic number, because the mean of its divisors is an integer number (15570240).

Almost surely, 2^228536123 is an apocalyptic number.

228536123 is a deficient number, since it is larger than the sum of its proper divisors (20587717).

228536123 is a wasteful number, since it uses less digits than its factorization.

228536123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its digits is 17280, while the sum is 32.

The square root of 228536123 is about 15117.4112532536. The cubic root of 228536123 is about 611.3899354119.

The spelling of 228536123 in words is "two hundred twenty-eight million, five hundred thirty-six thousand, one hundred twenty-three".