100203323197 has 2 divisors, whose sum is σ = 100203323198. Its totient is φ = 100203323196.

The previous prime is 100203323191. The next prime is 100203323251. The reversal of 100203323197 is 791323302001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80571390201 + 19631932996 = 283851^2 + 140114^2 .

It is a cyclic number.

It is not a de Polignac number, because 100203323197 - 2¹¹ = 100203321149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100203323191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50101661598 + 50101661599.

It is an arithmetic number, because the mean of its divisors is an integer number (50101661599).

Almost surely, 2^100203323197 is an apocalyptic number.

It is an amenable number.

100203323197 is a deficient number, since it is larger than the sum of its proper divisors (1).

100203323197 is an equidigital number, since it uses as much as digits as its factorization.

100203323197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

Adding to 100203323197 its reverse (791323302001), we get a palindrome (891526625198).

The spelling of 100203323197 in words is "one hundred billion, two hundred three million, three hundred twenty-three thousand, one hundred ninety-seven".