40230320197 has 2 divisors, whose sum is σ = 40230320198. Its totient is φ = 40230320196.

The previous prime is 40230320183. The next prime is 40230320203. The reversal of 40230320197 is 79102303204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36884738916 + 3345581281 = 192054^2 + 57841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40230320197 is a prime.

It is a super-2 number, since 2×40230320197² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40230320177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115160098 + 20115160099.

It is an arithmetic number, because the mean of its divisors is an integer number (20115160099).

Almost surely, 2^40230320197 is an apocalyptic number.

It is an amenable number.

40230320197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40230320197 is an equidigital number, since it uses as much as digits as its factorization.

40230320197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

It can be divided in two parts, 402303 and 20197, that added together give a square (422500 = 650²).

The spelling of 40230320197 in words is "forty billion, two hundred thirty million, three hundred twenty thousand, one hundred ninety-seven".