40731851 has 2 divisors, whose sum is σ = 40731852. Its totient is φ = 40731850.

The previous prime is 40731841. The next prime is 40731853. The reversal of 40731851 is 15813704.

40731851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40731851 - 2⁶ = 40731787 is a prime.

Together with 40731853, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40731853) 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, 20365925 + 20365926.

It is an arithmetic number, because the mean of its divisors is an integer number (20365926).

Almost surely, 2^40731851 is an apocalyptic number.

40731851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40731851 is an equidigital number, since it uses as much as digits as its factorization.

40731851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 40731851 is about 6382.1509696967. The cubic root of 40731851 is about 344.0683426275.

The spelling of 40731851 in words is "forty million, seven hundred thirty-one thousand, eight hundred fifty-one".