40315423 has 12 divisors (see below), whose sum is σ = 42799320. Its totient is φ = 37929920.

The previous prime is 40315417. The next prime is 40315453. The reversal of 40315423 is 32451304.

It is not a de Polignac number, because 40315423 - 2⁵ = 40315391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40315394 and 40315403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40315403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48336 + ... + 49162.

It is an arithmetic number, because the mean of its divisors is an integer number (3566610).

Almost surely, 2^40315423 is an apocalyptic number.

40315423 is a deficient number, since it is larger than the sum of its proper divisors (2483897).

40315423 is an equidigital number, since it uses as much as digits as its factorization.

40315423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40315423 is about 6349.4427314529. The cubic root of 40315423 is about 342.8917796439.

Adding to 40315423 its reverse (32451304), we get a palindrome (72766727).

The spelling of 40315423 in words is "forty million, three hundred fifteen thousand, four hundred twenty-three".