40330313 has 2 divisors, whose sum is σ = 40330314. Its totient is φ = 40330312.

The previous prime is 40330291. The next prime is 40330337. The reversal of 40330313 is 31303304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23454649 + 16875664 = 4843^2 + 4108^2 .

It is a cyclic number.

It is not a de Polignac number, because 40330313 - 2⁸ = 40330057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40330291 and 40330300.

It is not a weakly prime, because it can be changed into another prime (40330373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20165156 + 20165157.

It is an arithmetic number, because the mean of its divisors is an integer number (20165157).

Almost surely, 2^40330313 is an apocalyptic number.

It is an amenable number.

40330313 is a deficient number, since it is larger than the sum of its proper divisors (1).

40330313 is an equidigital number, since it uses as much as digits as its factorization.

40330313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 40330313 is about 6350.6151670527. The cubic root of 40330313 is about 342.9339887191.

Adding to 40330313 its reverse (31303304), we get a palindrome (71633617).

The spelling of 40330313 in words is "forty million, three hundred thirty thousand, three hundred thirteen".