40136331 has 4 divisors (see below), whose sum is σ = 53515112. Its totient is φ = 26757552.

The previous prime is 40136297. The next prime is 40136333. The reversal of 40136331 is 13363104.

40136331 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 40136331 - 2⁶ = 40136267 is a prime.

It is a super-2 number, since 2×40136331² = 3221850132283122, 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 = 40136298 and 40136307.

It is not an unprimeable number, because it can be changed into a prime (40136333) 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, 6689386 + ... + 6689391.

It is an arithmetic number, because the mean of its divisors is an integer number (13378778).

Almost surely, 2^40136331 is an apocalyptic number.

40136331 is a deficient number, since it is larger than the sum of its proper divisors (13378781).

40136331 is a wasteful number, since it uses less digits than its factorization.

40136331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13378780.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 40136331 is about 6335.3240643238. The cubic root of 40136331 is about 342.3832866392.

Adding to 40136331 its reverse (13363104), we get a palindrome (53499435).

The spelling of 40136331 in words is "forty million, one hundred thirty-six thousand, three hundred thirty-one".