40315031 has 4 divisors (see below), whose sum is σ = 40330272. Its totient is φ = 40299792.

The previous prime is 40315027. The next prime is 40315069. The reversal of 40315031 is 13051304.

40315031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40315031 - 2² = 40315027 is a prime.

It is a super-2 number, since 2×40315031² = 3250603449061922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40315001) 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 3 ways as a sum of consecutive naturals, for example, 2510 + ... + 9323.

It is an arithmetic number, because the mean of its divisors is an integer number (10082568).

Almost surely, 2^40315031 is an apocalyptic number.

40315031 is a deficient number, since it is larger than the sum of its proper divisors (15241).

40315031 is a wasteful number, since it uses less digits than its factorization.

40315031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 40315031 is about 6349.4118625271. The cubic root of 40315031 is about 342.8906682908.

Adding to 40315031 its reverse (13051304), we get a palindrome (53366335).

The spelling of 40315031 in words is "forty million, three hundred fifteen thousand, thirty-one".