40331197 has 2 divisors, whose sum is σ = 40331198. Its totient is φ = 40331196.

The previous prime is 40331183. The next prime is 40331201. The reversal of 40331197 is 79113304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37687321 + 2643876 = 6139^2 + 1626^2 .

It is a cyclic number.

It is not a de Polignac number, because 40331197 - 2⁷ = 40331069 is a prime.

It is a nialpdrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40331117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20165598 + 20165599.

It is an arithmetic number, because the mean of its divisors is an integer number (20165599).

Almost surely, 2^40331197 is an apocalyptic number.

It is an amenable number.

40331197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40331197 is an equidigital number, since it uses as much as digits as its factorization.

40331197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 40331197 is about 6350.6847662280. The cubic root of 40331197 is about 342.9364942904.

The spelling of 40331197 in words is "forty million, three hundred thirty-one thousand, one hundred ninety-seven".