40115315 has 4 divisors (see below), whose sum is σ = 48138384. Its totient is φ = 32092248.

The previous prime is 40115303. The next prime is 40115347. The reversal of 40115315 is 51351104.

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

It is a cyclic number.

It is not a de Polignac number, because 40115315 - 2¹⁴ = 40098931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4011527 + ... + 4011536.

It is an arithmetic number, because the mean of its divisors is an integer number (12034596).

Almost surely, 2^40115315 is an apocalyptic number.

40115315 is a deficient number, since it is larger than the sum of its proper divisors (8023069).

40115315 is an equidigital number, since it uses as much as digits as its factorization.

40115315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023068.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 40115315 is about 6333.6652106028. The cubic root of 40115315 is about 342.3235171550.

Adding to 40115315 its reverse (51351104), we get a palindrome (91466419).

The spelling of 40115315 in words is "forty million, one hundred fifteen thousand, three hundred fifteen".