40315491 has 12 divisors (see below), whose sum is σ = 59032168. Its totient is φ = 26508384.

The previous prime is 40315489. The next prime is 40315523. The reversal of 40315491 is 19451304.

40315491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40315491 - 2¹ = 40315489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40315091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30025 + ... + 31338.

Almost surely, 2^40315491 is an apocalyptic number.

40315491 is a deficient number, since it is larger than the sum of its proper divisors (18716677).

40315491 is a wasteful number, since it uses less digits than its factorization.

40315491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61442 (or 61439 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40315491 is about 6349.4480862513. The cubic root of 40315491 is about 342.8919724289.

Adding to 40315491 its reverse (19451304), we get a palindrome (59766795).

The spelling of 40315491 in words is "forty million, three hundred fifteen thousand, four hundred ninety-one".