40146731 has 2 divisors, whose sum is σ = 40146732. Its totient is φ = 40146730.

The previous prime is 40146719. The next prime is 40146761. The reversal of 40146731 is 13764104.

40146731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40146731 is a prime.

It is a super-2 number, since 2×40146731² = 3223520019972722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40146731.

It is not a weakly prime, because it can be changed into another prime (40146761) 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 as a sum of consecutive naturals, namely, 20073365 + 20073366.

It is an arithmetic number, because the mean of its divisors is an integer number (20073366).

Almost surely, 2^40146731 is an apocalyptic number.

40146731 is a deficient number, since it is larger than the sum of its proper divisors (1).

40146731 is an equidigital number, since it uses as much as digits as its factorization.

40146731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 40146731 is about 6336.1448057948. The cubic root of 40146731 is about 342.4128565126.

The spelling of 40146731 in words is "forty million, one hundred forty-six thousand, seven hundred thirty-one".