40033313 has 4 divisors (see below), whose sum is σ = 40069188. Its totient is φ = 39997440.

The previous prime is 40033309. The next prime is 40033333. The reversal of 40033313 is 31333004.

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 27699169 + 12334144 = 5263^2 + 3512^2 .

It is a cyclic number.

It is not a de Polignac number, because 40033313 - 2² = 40033309 is a prime.

It is a super-2 number, since 2×40033313² = 3205332299511938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40033291 and 40033300.

It is not an unprimeable number, because it can be changed into a prime (40033303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16208 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (10017297).

Almost surely, 2^40033313 is an apocalyptic number.

It is an amenable number.

40033313 is a deficient number, since it is larger than the sum of its proper divisors (35875).

40033313 is a wasteful number, since it uses less digits than its factorization.

40033313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35874.

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

The square root of 40033313 is about 6327.1883961203. The cubic root of 40033313 is about 342.0901037057.

Adding to 40033313 its reverse (31333004), we get a palindrome (71366317).

The spelling of 40033313 in words is "forty million, thirty-three thousand, three hundred thirteen".