523238369 has 2 divisors, whose sum is σ = 523238370. Its totient is φ = 523238368.

The previous prime is 523238363. The next prime is 523238407. The reversal of 523238369 is 963832325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481144225 + 42094144 = 21935^2 + 6488^2 .

It is a cyclic number.

It is not a de Polignac number, because 523238369 - 2⁸ = 523238113 is a prime.

It is a super-2 number, since 2×523238369² = 547556781587560322, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (523238363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261619184 + 261619185.

It is an arithmetic number, because the mean of its divisors is an integer number (261619185).

Almost surely, 2^523238369 is an apocalyptic number.

It is an amenable number.

523238369 is a deficient number, since it is larger than the sum of its proper divisors (1).

523238369 is an equidigital number, since it uses as much as digits as its factorization.

523238369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The square root of 523238369 is about 22874.4042326789. The cubic root of 523238369 is about 805.8110052594.

The spelling of 523238369 in words is "five hundred twenty-three million, two hundred thirty-eight thousand, three hundred sixty-nine".