223432405 has 12 divisors (see below), whose sum is σ = 311893740. Its totient is φ = 153210624.

The previous prime is 223432403. The next prime is 223432423. The reversal of 223432405 is 504234322.

It can be written as a sum of positive squares in 2 ways, for example, as 117115684 + 106316721 = 10822^2 + 10311^2 .

It is not a de Polignac number, because 223432405 - 2¹ = 223432403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223432405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223432403) 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, 455740 + ... + 456229.

It is an arithmetic number, because the mean of its divisors is an integer number (25991145).

Almost surely, 2^223432405 is an apocalyptic number.

It is an amenable number.

223432405 is a deficient number, since it is larger than the sum of its proper divisors (88461335).

223432405 is an equidigital number, since it uses as much as digits as its factorization.

223432405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911988 (or 911981 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 223432405 is about 14947.6555017835. The cubic root of 223432405 is about 606.8043983799.

Adding to 223432405 its reverse (504234322), we get a palindrome (727666727).

The spelling of 223432405 in words is "two hundred twenty-three million, four hundred thirty-two thousand, four hundred five".