20243034197 has 2 divisors, whose sum is σ = 20243034198. Its totient is φ = 20243034196.

The previous prime is 20243034151. The next prime is 20243034233. The reversal of 20243034197 is 79143034202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10672129636 + 9570904561 = 103306^2 + 97831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20243034197 is a prime.

It is a super-2 number, since 2×20243034197² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20243034127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121517098 + 10121517099.

It is an arithmetic number, because the mean of its divisors is an integer number (10121517099).

Almost surely, 2^20243034197 is an apocalyptic number.

It is an amenable number.

20243034197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243034197 is an equidigital number, since it uses as much as digits as its factorization.

20243034197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

Adding to 20243034197 its reverse (79143034202), we get a palindrome (99386068399).

The spelling of 20243034197 in words is "twenty billion, two hundred forty-three million, thirty-four thousand, one hundred ninety-seven".