228816831 has 8 divisors (see below), whose sum is σ = 305189680. Its totient is φ = 152494272.

The previous prime is 228816823. The next prime is 228816853. The reversal of 228816831 is 138618822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228816831 - 2³ = 228816823 is a prime.

It is a super-2 number, since 2×228816831² = 104714284297765122, 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 228816831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228816431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220 + ... + 21393.

It is an arithmetic number, because the mean of its divisors is an integer number (38148710).

Almost surely, 2^228816831 is an apocalyptic number.

228816831 is a deficient number, since it is larger than the sum of its proper divisors (76372849).

228816831 is a wasteful number, since it uses less digits than its factorization.

228816831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25145.

The product of its digits is 36864, while the sum is 39.

The square root of 228816831 is about 15126.6926656160. The cubic root of 228816831 is about 611.6401538086.

The spelling of 228816831 in words is "two hundred twenty-eight million, eight hundred sixteen thousand, eight hundred thirty-one".