40310031 has 4 divisors (see below), whose sum is σ = 53746712. Its totient is φ = 26873352.

The previous prime is 40310027. The next prime is 40310047. The reversal of 40310031 is 13001304.

40310031 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 not a de Polignac number, because 40310031 - 2² = 40310027 is a prime.

It is a super-2 number, since 2×40310031² = 3249797198441922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40309989 and 40310016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40310531) 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, 6718336 + ... + 6718341.

It is an arithmetic number, because the mean of its divisors is an integer number (13436678).

Almost surely, 2^40310031 is an apocalyptic number.

40310031 is a deficient number, since it is larger than the sum of its proper divisors (13436681).

40310031 is a wasteful number, since it uses less digits than its factorization.

40310031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436680.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 40310031 is about 6349.0181130628. The cubic root of 40310031 is about 342.8764922364.

Adding to 40310031 its reverse (13001304), we get a palindrome (53311335).

The spelling of 40310031 in words is "forty million, three hundred ten thousand, thirty-one".