1223336140 has 24 divisors (see below), whose sum is σ = 2766622320. Its totient is φ = 451693248.

The previous prime is 1223336131. The next prime is 1223336159. The reversal of 1223336140 is 416333221.

It is a super-2 number, since 2×1223336140² = 2993102622860199200, which contains 22 as substring.

It is an unprimeable number.

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, 2352310 + ... + 2352829.

It is an arithmetic number, because the mean of its divisors is an integer number (115275930).

Almost surely, 2^1223336140 is an apocalyptic number.

1223336140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223336140 is an abundant number, since it is smaller than the sum of its proper divisors (1543286180).

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

1223336140 is a wasteful number, since it uses less digits than its factorization.

1223336140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4705161 (or 4705159 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1223336140 is about 34976.2224947178. Note that the first 3 decimals coincide. The cubic root of 1223336140 is about 1069.5028231460.

Adding to 1223336140 its reverse (416333221), we get a palindrome (1639669361).

The spelling of 1223336140 in words is "one billion, two hundred twenty-three million, three hundred thirty-six thousand, one hundred forty".