40204232317 has 2 divisors, whose sum is σ = 40204232318. Its totient is φ = 40204232316.

The previous prime is 40204232309. The next prime is 40204232329. The reversal of 40204232317 is 71323240204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39976403481 + 227828836 = 199941^2 + 15094^2 .

It is a cyclic number.

It is not a de Polignac number, because 40204232317 - 2³ = 40204232309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40204232017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102116158 + 20102116159.

It is an arithmetic number, because the mean of its divisors is an integer number (20102116159).

Almost surely, 2^40204232317 is an apocalyptic number.

It is an amenable number.

40204232317 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204232317 is an equidigital number, since it uses as much as digits as its factorization.

40204232317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The spelling of 40204232317 in words is "forty billion, two hundred four million, two hundred thirty-two thousand, three hundred seventeen".