40223321 has 2 divisors, whose sum is σ = 40223322. Its totient is φ = 40223320.

The previous prime is 40223311. The next prime is 40223341. The reversal of 40223321 is 12332204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26265625 + 13957696 = 5125^2 + 3736^2 .

It is a cyclic number.

It is not a de Polignac number, because 40223321 - 2⁶ = 40223257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40223321.

It is not a weakly prime, because it can be changed into another prime (40223311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20111660 + 20111661.

It is an arithmetic number, because the mean of its divisors is an integer number (20111661).

Almost surely, 2^40223321 is an apocalyptic number.

It is an amenable number.

40223321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40223321 is an equidigital number, since it uses as much as digits as its factorization.

40223321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40223321 is about 6342.1858219387. The cubic root of 40223321 is about 342.6304644431.

Adding to 40223321 its reverse (12332204), we get a palindrome (52555525).

The spelling of 40223321 in words is "forty million, two hundred twenty-three thousand, three hundred twenty-one".