40306131 has 12 divisors (see below), whose sum is σ = 58276608. Its totient is φ = 26844624.

The previous prime is 40306127. The next prime is 40306141. The reversal of 40306131 is 13160304.

40306131 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 40306131 - 2² = 40306127 is a prime.

It is a super-2 number, since 2×40306131² = 3249168392378322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40306121) 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, 13621 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (4856384).

Almost surely, 2^40306131 is an apocalyptic number.

40306131 is a deficient number, since it is larger than the sum of its proper divisors (17970477).

40306131 is a wasteful number, since it uses less digits than its factorization.

40306131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362 (or 4359 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 40306131 is about 6348.7109715280. The cubic root of 40306131 is about 342.8654341001.

Adding to 40306131 its reverse (13160304), we get a palindrome (53466435).

The spelling of 40306131 in words is "forty million, three hundred six thousand, one hundred thirty-one".