20243031097 has 2 divisors, whose sum is σ = 20243031098. Its totient is φ = 20243031096.

The previous prime is 20243031079. The next prime is 20243031199. The reversal of 20243031097 is 79013034202.

Together with previous prime (20243031079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19684370601 + 558660496 = 140301^2 + 23636^2 .

It is a cyclic number.

It is not a de Polignac number, because 20243031097 - 2²³ = 20234642489 is a prime.

It is not a weakly prime, because it can be changed into another prime (20243031077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121515548 + 10121515549.

It is an arithmetic number, because the mean of its divisors is an integer number (10121515549).

Almost surely, 2^20243031097 is an apocalyptic number.

It is an amenable number.

20243031097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243031097 is an equidigital number, since it uses as much as digits as its factorization.

20243031097 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20243031097 its reverse (79013034202), we get a palindrome (99256065299).

The spelling of 20243031097 in words is "twenty billion, two hundred forty-three million, thirty-one thousand, ninety-seven".