223321453240 has 32 divisors (see below), whose sum is σ = 506088198000. Its totient is φ = 88685927424.

The previous prime is 223321453219. The next prime is 223321453249. The reversal of 223321453240 is 42354123322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223321453249) 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, 20077305 + ... + 20088424.

Almost surely, 2^223321453240 is an apocalyptic number.

223321453240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223321453240 is an abundant number, since it is smaller than the sum of its proper divisors (282766744760).

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

223321453240 is a wasteful number, since it uses less digits than its factorization.

223321453240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40165879 (or 40165875 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 223321453240 its reverse (42354123322), we get a palindrome (265675576562).

The spelling of 223321453240 in words is "two hundred twenty-three billion, three hundred twenty-one million, four hundred fifty-three thousand, two hundred forty".