1223243340 has 48 divisors (see below), whose sum is σ = 3736454400. Its totient is φ = 296543680.

The previous prime is 1223243327. The next prime is 1223243369. The reversal of 1223243340 is 433423221.

It is a self number, because there is not a number n which added to its sum of digits gives 1223243340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926040 + ... + 927359.

It is an arithmetic number, because the mean of its divisors is an integer number (77842800).

Almost surely, 2^1223243340 is an apocalyptic number.

1223243340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223243340 is an abundant number, since it is smaller than the sum of its proper divisors (2513211060).

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

1223243340 is a wasteful number, since it uses less digits than its factorization.

1223243340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853422 (or 1853420 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1223243340 is about 34974.8958540265. The cubic root of 1223243340 is about 1069.4757789651.

Adding to 1223243340 its reverse (433423221), we get a palindrome (1656666561).

The spelling of 1223243340 in words is "one billion, two hundred twenty-three million, two hundred forty-three thousand, three hundred forty".