223046981 has 2 divisors, whose sum is σ = 223046982. Its totient is φ = 223046980.

The previous prime is 223046969. The next prime is 223046983. The reversal of 223046981 is 189640322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194156356 + 28890625 = 13934^2 + 5375^2 .

It is a cyclic number.

It is not a de Polignac number, because 223046981 - 2²² = 218852677 is a prime.

It is a super-2 number, since 2×223046981² = 99499911466428722, which contains 22 as substring.

Together with 223046983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223046983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111523490 + 111523491.

It is an arithmetic number, because the mean of its divisors is an integer number (111523491).

Almost surely, 2^223046981 is an apocalyptic number.

It is an amenable number.

223046981 is a deficient number, since it is larger than the sum of its proper divisors (1).

223046981 is an equidigital number, since it uses as much as digits as its factorization.

223046981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 223046981 is about 14934.7574804548. The cubic root of 223046981 is about 606.4552822228.

The spelling of 223046981 in words is "two hundred twenty-three million, forty-six thousand, nine hundred eighty-one".