223081493 has 2 divisors, whose sum is σ = 223081494. Its totient is φ = 223081492.

The previous prime is 223081477. The next prime is 223081499. The reversal of 223081493 is 394180322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216148804 + 6932689 = 14702^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 223081493 - 2⁴ = 223081477 is a prime.

It is a super-3 number, since 3×223081493³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223081499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111540746 + 111540747.

It is an arithmetic number, because the mean of its divisors is an integer number (111540747).

Almost surely, 2^223081493 is an apocalyptic number.

It is an amenable number.

223081493 is a deficient number, since it is larger than the sum of its proper divisors (1).

223081493 is an equidigital number, since it uses as much as digits as its factorization.

223081493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 223081493 is about 14935.9128612884. The cubic root of 223081493 is about 606.4865594978.

The spelling of 223081493 in words is "two hundred twenty-three million, eighty-one thousand, four hundred ninety-three".