228131835 has 32 divisors (see below), whose sum is σ = 378743040. Its totient is φ = 117118848.

The previous prime is 228131801. The next prime is 228131837. The reversal of 228131835 is 538131822.

It is not a de Polignac number, because 228131835 - 2¹¹ = 228129787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228131796 and 228131805.

It is not an unprimeable number, because it can be changed into a prime (228131837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202584 + ... + 203706.

It is an arithmetic number, because the mean of its divisors is an integer number (11835720).

Almost surely, 2^228131835 is an apocalyptic number.

228131835 is a deficient number, since it is larger than the sum of its proper divisors (150611205).

228131835 is a wasteful number, since it uses less digits than its factorization.

228131835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627.

The product of its digits is 11520, while the sum is 33.

The square root of 228131835 is about 15104.0337327483. The cubic root of 228131835 is about 611.0291995692.

The spelling of 228131835 in words is "two hundred twenty-eight million, one hundred thirty-one thousand, eight hundred thirty-five".