40303030321 has 2 divisors, whose sum is σ = 40303030322. Its totient is φ = 40303030320.

The previous prime is 40303030309. The next prime is 40303030373. The reversal of 40303030321 is 12303030304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31794812721 + 8508217600 = 178311^2 + 92240^2 .

It is a cyclic number.

It is not a de Polignac number, because 40303030321 - 2¹⁷ = 40302899249 is a prime.

It is not a weakly prime, because it can be changed into another prime (40303030421) 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 as a sum of consecutive naturals, namely, 20151515160 + 20151515161.

It is an arithmetic number, because the mean of its divisors is an integer number (20151515161).

Almost surely, 2^40303030321 is an apocalyptic number.

It is an amenable number.

40303030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40303030321 is an equidigital number, since it uses as much as digits as its factorization.

40303030321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 40303030321 its reverse (12303030304), we get a palindrome (52606060625).

The spelling of 40303030321 in words is "forty billion, three hundred three million, thirty thousand, three hundred twenty-one".