40731001 has 2 divisors, whose sum is σ = 40731002. Its totient is φ = 40731000.

The previous prime is 40730983. The next prime is 40731017. The reversal of 40731001 is 10013704.

40731001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40731017) can be obtained adding 40731001 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 4309776 = 6035^2 + 2076^2 .

It is a cyclic number.

It is not a de Polignac number, because 40731001 - 2⁷ = 40730873 is a prime.

It is not a weakly prime, because it can be changed into another prime (40731071) 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, 20365500 + 20365501.

It is an arithmetic number, because the mean of its divisors is an integer number (20365501).

Almost surely, 2^40731001 is an apocalyptic number.

It is an amenable number.

40731001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40731001 is an equidigital number, since it uses as much as digits as its factorization.

40731001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 40731001 is about 6382.0843773802. The cubic root of 40731001 is about 344.0659492497.

Adding to 40731001 its reverse (10013704), we get a palindrome (50744705).

The spelling of 40731001 in words is "forty million, seven hundred thirty-one thousand, one".