228855431 has 16 divisors (see below), whose sum is σ = 271944000. Its totient is φ = 192445344.

The previous prime is 228855427. The next prime is 228855439. The reversal of 228855431 is 134558822.

It is not a de Polignac number, because 228855431 - 2² = 228855427 is a prime.

It is a super-2 number, since 2×228855431² = 104749616596391522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228855439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11885 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (16996500).

Almost surely, 2^228855431 is an apocalyptic number.

228855431 is a deficient number, since it is larger than the sum of its proper divisors (43088569).

228855431 is an equidigital number, since it uses as much as digits as its factorization.

228855431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12663 (or 12649 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 228855431 is about 15127.9685020825. The cubic root of 228855431 is about 611.6745451926.

The spelling of 228855431 in words is "two hundred twenty-eight million, eight hundred fifty-five thousand, four hundred thirty-one".