228906831 has 16 divisors (see below), whose sum is σ = 320916960. Its totient is φ = 144923520.

The previous prime is 228906829. The next prime is 228906857. The reversal of 228906831 is 138609822.

It is a happy number.

It is not a de Polignac number, because 228906831 - 2¹ = 228906829 is a prime.

It is a super-2 number, since 2×228906831² = 104796674556925122, which contains 22 as substring.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 228906831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228906871) 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 15 ways as a sum of consecutive naturals, for example, 16260 + ... + 26873.

It is an arithmetic number, because the mean of its divisors is an integer number (20057310).

Almost surely, 2^228906831 is an apocalyptic number.

228906831 is a deficient number, since it is larger than the sum of its proper divisors (92010129).

228906831 is a wasteful number, since it uses less digits than its factorization.

228906831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43226.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 228906831 is about 15129.6672468366. The cubic root of 228906831 is about 611.7203349706.

The spelling of 228906831 in words is "two hundred twenty-eight million, nine hundred six thousand, eight hundred thirty-one".