40231073 has 2 divisors, whose sum is σ = 40231074. Its totient is φ = 40231072.

The previous prime is 40231049. The next prime is 40231111. The reversal of 40231073 is 37013204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40043584 + 187489 = 6328^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 40231073 - 2²² = 36036769 is a prime.

It is not a weakly prime, because it can be changed into another prime (40231003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115536 + 20115537.

It is an arithmetic number, because the mean of its divisors is an integer number (20115537).

Almost surely, 2^40231073 is an apocalyptic number.

It is an amenable number.

40231073 is a deficient number, since it is larger than the sum of its proper divisors (1).

40231073 is an equidigital number, since it uses as much as digits as its factorization.

40231073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 40231073 is about 6342.7969382600. The cubic root of 40231073 is about 342.6524740690.

Adding to 40231073 its reverse (37013204), we get a palindrome (77244277).

The spelling of 40231073 in words is "forty million, two hundred thirty-one thousand, seventy-three".