40312193 has 2 divisors, whose sum is σ = 40312194. Its totient is φ = 40312192.

The previous prime is 40312189. The next prime is 40312201. The reversal of 40312193 is 39121304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31449664 + 8862529 = 5608^2 + 2977^2 .

It is a cyclic number.

It is not a de Polignac number, because 40312193 - 2² = 40312189 is a prime.

It is not a weakly prime, because it can be changed into another prime (40312093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156096 + 20156097.

It is an arithmetic number, because the mean of its divisors is an integer number (20156097).

Almost surely, 2^40312193 is an apocalyptic number.

It is an amenable number.

40312193 is a deficient number, since it is larger than the sum of its proper divisors (1).

40312193 is an equidigital number, since it uses as much as digits as its factorization.

40312193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 40312193 is about 6349.1883733277. The cubic root of 40312193 is about 342.8826221061.

Adding to 40312193 its reverse (39121304), we get a palindrome (79433497).

The spelling of 40312193 in words is "forty million, three hundred twelve thousand, one hundred ninety-three".