20231143393 has 2 divisors, whose sum is σ = 20231143394. Its totient is φ = 20231143392.

The previous prime is 20231143343. The next prime is 20231143409. The reversal of 20231143393 is 39334113202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16222607424 + 4008535969 = 127368^2 + 63313^2 .

It is a cyclic number.

It is not a de Polignac number, because 20231143393 - 2³³ = 11641208801 is a prime.

It is not a weakly prime, because it can be changed into another prime (20231143343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115571696 + 10115571697.

It is an arithmetic number, because the mean of its divisors is an integer number (10115571697).

Almost surely, 2^20231143393 is an apocalyptic number.

It is an amenable number.

20231143393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231143393 is an equidigital number, since it uses as much as digits as its factorization.

20231143393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

Adding to 20231143393 its reverse (39334113202), we get a palindrome (59565256595).

The spelling of 20231143393 in words is "twenty billion, two hundred thirty-one million, one hundred forty-three thousand, three hundred ninety-three".