223581340 has 24 divisors (see below), whose sum is σ = 469909440. Its totient is φ = 89358528.

The previous prime is 223581313. The next prime is 223581349. The reversal of 223581340 is 43185322.

223581340 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 223581299 and 223581308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223581349) 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, 24669 + ... + 32491.

It is an arithmetic number, because the mean of its divisors is an integer number (19579560).

Almost surely, 2^223581340 is an apocalyptic number.

223581340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223581340 is an abundant number, since it is smaller than the sum of its proper divisors (246328100).

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

223581340 is a wasteful number, since it uses less digits than its factorization.

223581340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9261 (or 9259 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 223581340 is about 14952.6365568083. The cubic root of 223581340 is about 606.9391958070.

The spelling of 223581340 in words is "two hundred twenty-three million, five hundred eighty-one thousand, three hundred forty".