228140343 has 12 divisors (see below), whose sum is σ = 330086848. Its totient is φ = 151839360.

The previous prime is 228140309. The next prime is 228140351. The reversal of 228140343 is 343041822.

228140343 is a `hidden beast` number, since 2 + 281 + 40 + 343 = 666.

It is not a de Polignac number, because 228140343 - 2⁶ = 228140279 is a prime.

It is a super-2 number, since 2×228140343² = 104096032208315298, 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 (228140443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15418 + ... + 26343.

Almost surely, 2^228140343 is an apocalyptic number.

228140343 is a deficient number, since it is larger than the sum of its proper divisors (101946505).

228140343 is a wasteful number, since it uses less digits than its factorization.

228140343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42374 (or 42371 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 228140343 is about 15104.3153767392. The cubic root of 228140343 is about 611.0367954283.

It can be divided in two parts, 2281 and 40343, that added together give a palindrome (42624).

The spelling of 228140343 in words is "two hundred twenty-eight million, one hundred forty thousand, three hundred forty-three".