40312603 has 2 divisors, whose sum is σ = 40312604. Its totient is φ = 40312602.

The previous prime is 40312589. The next prime is 40312681. The reversal of 40312603 is 30621304.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40312603 is a prime.

It is not a weakly prime, because it can be changed into another prime (40312693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156301 + 20156302.

It is an arithmetic number, because the mean of its divisors is an integer number (20156302).

Almost surely, 2^40312603 is an apocalyptic number.

40312603 is a deficient number, since it is larger than the sum of its proper divisors (1).

40312603 is an equidigital number, since it uses as much as digits as its factorization.

40312603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 40312603 is about 6349.2206608370. The cubic root of 40312603 is about 342.8837845452.

Adding to 40312603 its reverse (30621304), we get a palindrome (70933907).

The spelling of 40312603 in words is "forty million, three hundred twelve thousand, six hundred three".