223980981 has 8 divisors (see below), whose sum is σ = 341304384. Its totient is φ = 127989120.

The previous prime is 223980979. The next prime is 223980989. The reversal of 223980981 is 189089322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223980981 - 2¹ = 223980979 is a prime.

It is a super-2 number, since 2×223980981² = 100334959699444722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223980989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5332860 + ... + 5332901.

It is an arithmetic number, because the mean of its divisors is an integer number (42663048).

Almost surely, 2^223980981 is an apocalyptic number.

223980981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

223980981 is a deficient number, since it is larger than the sum of its proper divisors (117323403).

223980981 is a wasteful number, since it uses less digits than its factorization.

223980981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665771.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 223980981 is about 14965.9941534133. The cubic root of 223980981 is about 607.3006055298.

The spelling of 223980981 in words is "two hundred twenty-three million, nine hundred eighty thousand, nine hundred eighty-one".