1235243223 has 8 divisors (see below), whose sum is σ = 1829990000. Its totient is φ = 823495464.

The previous prime is 1235243213. The next prime is 1235243279. The reversal of 1235243223 is 3223425321.

It is not a de Polignac number, because 1235243223 - 2⁶ = 1235243159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45749749 = 1235243223 / (1 + 2 + 3 + 5 + 2 + 4 + 3 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235243213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22874848 + ... + 22874901.

It is an arithmetic number, because the mean of its divisors is an integer number (228748750).

Almost surely, 2^1235243223 is an apocalyptic number.

1235243223 is a deficient number, since it is larger than the sum of its proper divisors (594746777).

1235243223 is an equidigital number, since it uses as much as digits as its factorization.

1235243223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45749758 (or 45749752 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 1235243223 is about 35146.0271296771. The cubic root of 1235243223 is about 1072.9615520387.

Adding to 1235243223 its reverse (3223425321), we get a palindrome (4458668544).

The spelling of 1235243223 in words is "one billion, two hundred thirty-five million, two hundred forty-three thousand, two hundred twenty-three".