40204313 has 4 divisors (see below), whose sum is σ = 41184948. Its totient is φ = 39223680.

The previous prime is 40204301. The next prime is 40204319. The reversal of 40204313 is 31340204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4048144 + 36156169 = 2012^2 + 6013^2 .

It is a cyclic number.

It is not a de Polignac number, because 40204313 - 2²⁰ = 39155737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40204291 and 40204300.

It is not an unprimeable number, because it can be changed into a prime (40204319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490256 + ... + 490337.

It is an arithmetic number, because the mean of its divisors is an integer number (10296237).

Almost surely, 2^40204313 is an apocalyptic number.

It is an amenable number.

40204313 is a deficient number, since it is larger than the sum of its proper divisors (980635).

40204313 is an equidigital number, since it uses as much as digits as its factorization.

40204313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980634.

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

The square root of 40204313 is about 6340.6871078772. The cubic root of 40204313 is about 342.5764845970.

Adding to 40204313 its reverse (31340204), we get a palindrome (71544517).

The spelling of 40204313 in words is "forty million, two hundred four thousand, three hundred thirteen".