1243344320 has 56 divisors (see below), whose sum is σ = 2963875200. Its totient is φ = 496806912.

The previous prime is 1243344307. The next prime is 1243344341. The reversal of 1243344320 is 234433421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243344320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455921 + ... + 458639.

Almost surely, 2^1243344320 is an apocalyptic number.

1243344320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243344320 is an abundant number, since it is smaller than the sum of its proper divisors (1720530880).

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

1243344320 is a wasteful number, since it uses less digits than its factorization.

1243344320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 1243344320 is about 35261.0879015381. The cubic root of 1243344320 is about 1075.3020445654.

Adding to 1243344320 its reverse (234433421), we get a palindrome (1477777741).

The spelling of 1243344320 in words is "one billion, two hundred forty-three million, three hundred forty-four thousand, three hundred twenty".