40115313 has 24 divisors (see below), whose sum is σ = 66388608. Its totient is φ = 22865472.

The previous prime is 40115303. The next prime is 40115347. The reversal of 40115313 is 31351104.

It is not a de Polignac number, because 40115313 - 2⁴ = 40115297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40115303) 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 23 ways as a sum of consecutive naturals, for example, 46381 + ... + 47237.

It is an arithmetic number, because the mean of its divisors is an integer number (2766192).

Almost surely, 2^40115313 is an apocalyptic number.

It is an amenable number.

40115313 is a deficient number, since it is larger than the sum of its proper divisors (26273295).

40115313 is a wasteful number, since it uses less digits than its factorization.

40115313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 40115313 is about 6333.6650527163. The cubic root of 40115313 is about 342.3235114660.

Adding to 40115313 its reverse (31351104), we get a palindrome (71466417).

The spelling of 40115313 in words is "forty million, one hundred fifteen thousand, three hundred thirteen".