223431001 has 2 divisors, whose sum is σ = 223431002. Its totient is φ = 223431000.

The previous prime is 223430989. The next prime is 223431011. The reversal of 223431001 is 100134322.

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., 219632400 + 3798601 = 14820^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 223431001 - 2¹⁹ = 222906713 is a prime.

It is not a weakly prime, because it can be changed into another prime (223431011) by changing a digit.

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 as a sum of consecutive naturals, namely, 111715500 + 111715501.

It is an arithmetic number, because the mean of its divisors is an integer number (111715501).

Almost surely, 2^223431001 is an apocalyptic number.

It is an amenable number.

223431001 is a deficient number, since it is larger than the sum of its proper divisors (1).

223431001 is an equidigital number, since it uses as much as digits as its factorization.

223431001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 223431001 is about 14947.6085378230. The cubic root of 223431001 is about 606.8031273689.

Adding to 223431001 its reverse (100134322), we get a palindrome (323565323).

The spelling of 223431001 in words is "two hundred twenty-three million, four hundred thirty-one thousand, one".