405135223 has 2 divisors, whose sum is σ = 405135224. Its totient is φ = 405135222.

The previous prime is 405135217. The next prime is 405135281. The reversal of 405135223 is 322531504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405135223 - 2¹³ = 405127031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405130223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202567611 + 202567612.

It is an arithmetic number, because the mean of its divisors is an integer number (202567612).

Almost surely, 2^405135223 is an apocalyptic number.

405135223 is a deficient number, since it is larger than the sum of its proper divisors (1).

405135223 is an equidigital number, since it uses as much as digits as its factorization.

405135223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 405135223 is about 20127.9711595580. The cubic root of 405135223 is about 739.9459559996.

Adding to 405135223 its reverse (322531504), we get a palindrome (727666727).

The spelling of 405135223 in words is "four hundred five million, one hundred thirty-five thousand, two hundred twenty-three".