223231240 has 16 divisors (see below), whose sum is σ = 502270380. Its totient is φ = 89292480.

The previous prime is 223231231. The next prime is 223231259. The reversal of 223231240 is 42132322.

It can be written as a sum of positive squares in 2 ways, for example, as 217090756 + 6140484 = 14734^2 + 2478^2 .

It is a super-3 number, since 3×223231240³ (a number of 26 digits) contains 333 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 3 ways as a sum of consecutive naturals, for example, 2790351 + ... + 2790430.

Almost surely, 2^223231240 is an apocalyptic number.

223231240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223231240 is an abundant number, since it is smaller than the sum of its proper divisors (279039140).

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

223231240 is a wasteful number, since it uses less digits than its factorization.

223231240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580792 (or 5580788 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 223231240 is about 14940.9250048315. The cubic root of 223231240 is about 606.6222337273.

Adding to 223231240 its reverse (42132322), we get a palindrome (265363562).

It can be divided in two parts, 22323 and 1240, that multiplied together give a triangular number (27680520 = T₇₄₄₀).

The spelling of 223231240 in words is "two hundred twenty-three million, two hundred thirty-one thousand, two hundred forty".