284540233 has 2 divisors, whose sum is σ = 284540234. Its totient is φ = 284540232.

The previous prime is 284540213. The next prime is 284540261. The reversal of 284540233 is 332045482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166100544 + 118439689 = 12888^2 + 10883^2 .

It is a cyclic number.

It is not a de Polignac number, because 284540233 - 2²¹ = 282443081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 284540195 and 284540204.

It is not a weakly prime, because it can be changed into another prime (284540213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142270116 + 142270117.

It is an arithmetic number, because the mean of its divisors is an integer number (142270117).

Almost surely, 2^284540233 is an apocalyptic number.

It is an amenable number.

284540233 is a deficient number, since it is larger than the sum of its proper divisors (1).

284540233 is an equidigital number, since it uses as much as digits as its factorization.

284540233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 284540233 is about 16868.3203965303. The cubic root of 284540233 is about 657.7303682733.

The spelling of 284540233 in words is "two hundred eighty-four million, five hundred forty thousand, two hundred thirty-three".