228227831 has 4 divisors (see below), whose sum is σ = 245783832. Its totient is φ = 210671832.

The previous prime is 228227821. The next prime is 228227851. The reversal of 228227831 is 138722822.

It is a happy number.

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 228227831 - 2¹⁰ = 228226807 is a prime.

It is a super-2 number, since 2×228227831² = 104175885685929122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228227791 and 228227800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228227801) 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 3 ways as a sum of consecutive naturals, for example, 8777981 + ... + 8778006.

It is an arithmetic number, because the mean of its divisors is an integer number (61445958).

Almost surely, 2^228227831 is an apocalyptic number.

228227831 is a deficient number, since it is larger than the sum of its proper divisors (17556001).

228227831 is a wasteful number, since it uses less digits than its factorization.

228227831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17556000.

The product of its digits is 21504, while the sum is 35.

The square root of 228227831 is about 15107.2112251070. The cubic root of 228227831 is about 611.1148929047.

The spelling of 228227831 in words is "two hundred twenty-eight million, two hundred twenty-seven thousand, eight hundred thirty-one".