228883431 has 16 divisors (see below), whose sum is σ = 352373504. Its totient is φ = 129441024.

The previous prime is 228883363. The next prime is 228883433. The reversal of 228883431 is 134388822.

It is not a de Polignac number, because 228883431 - 2²³ = 220494823 is a prime.

It is a super-4 number, since 4×228883431⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 228883431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228883433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54145 + ... + 58218.

It is an arithmetic number, because the mean of its divisors is an integer number (22023344).

Almost surely, 2^228883431 is an apocalyptic number.

228883431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

228883431 is a deficient number, since it is larger than the sum of its proper divisors (123490073).

228883431 is a wasteful number, since it uses less digits than its factorization.

228883431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112470.

The product of its digits is 73728, while the sum is 39.

The square root of 228883431 is about 15128.8939119818. The cubic root of 228883431 is about 611.6994898906.

The spelling of 228883431 in words is "two hundred twenty-eight million, eight hundred eighty-three thousand, four hundred thirty-one".