1223040234 has 16 divisors (see below), whose sum is σ = 2634240672. Its totient is φ = 376320048.

The previous prime is 1223040211. The next prime is 1223040239. The reversal of 1223040234 is 4320403221.

It is a self number, because there is not a number n which added to its sum of digits gives 1223040234.

It is not an unprimeable number, because it can be changed into a prime (1223040239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7839924 + ... + 7840079.

It is an arithmetic number, because the mean of its divisors is an integer number (164640042).

Almost surely, 2^1223040234 is an apocalyptic number.

1223040234 is an abundant number, since it is smaller than the sum of its proper divisors (1411200438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223040234 is a wasteful number, since it uses less digits than its factorization.

1223040234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15680021.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1223040234 is about 34971.9921365655. The cubic root of 1223040234 is about 1069.4165841552.

Adding to 1223040234 its reverse (4320403221), we get a palindrome (5543443455).

The spelling of 1223040234 in words is "one billion, two hundred twenty-three million, forty thousand, two hundred thirty-four".