40001313 has 16 divisors (see below), whose sum is σ = 58291200. Its totient is φ = 24198480.

The previous prime is 40001303. The next prime is 40001359. The reversal of 40001313 is 31310004.

It is not a de Polignac number, because 40001313 - 2⁶ = 40001249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40001303) 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, 29668 + ... + 30986.

It is an arithmetic number, because the mean of its divisors is an integer number (3643200).

Almost surely, 2^40001313 is an apocalyptic number.

It is an amenable number.

40001313 is a deficient number, since it is larger than the sum of its proper divisors (18289887).

40001313 is a wasteful number, since it uses less digits than its factorization.

40001313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 40001313 is about 6324.6591212491. The cubic root of 40001313 is about 341.9989312918.

Adding to 40001313 its reverse (31310004), we get a palindrome (71311317).

The spelling of 40001313 in words is "forty million, one thousand, three hundred thirteen".