405235223 has 2 divisors, whose sum is σ = 405235224. Its totient is φ = 405235222.

The previous prime is 405235219. The next prime is 405235253. The reversal of 405235223 is 322532504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405235223 - 2² = 405235219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405235192 and 405235201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405235213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202617611 + 202617612.

It is an arithmetic number, because the mean of its divisors is an integer number (202617612).

Almost surely, 2^405235223 is an apocalyptic number.

405235223 is a deficient number, since it is larger than the sum of its proper divisors (1).

405235223 is an equidigital number, since it uses as much as digits as its factorization.

405235223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 405235223 is about 20130.4551115965. The cubic root of 405235223 is about 740.0068315659.

Adding to 405235223 its reverse (322532504), we get a palindrome (727767727).

The spelling of 405235223 in words is "four hundred five million, two hundred thirty-five thousand, two hundred twenty-three".