40040313 has 16 divisors (see below), whose sum is σ = 56458752. Its totient is φ = 25200000.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040313 is 31304004.

It is not a de Polignac number, because 40040313 - 2⁶ = 40040249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40040292 and 40040301.

It is not an unprimeable number, because it can be changed into a prime (40040393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438 + ... + 9063.

It is an arithmetic number, because the mean of its divisors is an integer number (3528672).

Almost surely, 2^40040313 is an apocalyptic number.

It is an amenable number.

40040313 is a deficient number, since it is larger than the sum of its proper divisors (16418439).

40040313 is a wasteful number, since it uses less digits than its factorization.

40040313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10576.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40040313 is about 6327.7415402338. The cubic root of 40040313 is about 342.1100411943.

Adding to 40040313 its reverse (31304004), we get a palindrome (71344317).

The spelling of 40040313 in words is "forty million, forty thousand, three hundred thirteen".