20312323241057 has 2 divisors, whose sum is σ = 20312323241058. Its totient is φ = 20312323241056.

The previous prime is 20312323241009. The next prime is 20312323241059. The reversal of 20312323241057 is 75014232321302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17114363576401 + 3197959664656 = 4136951^2 + 1788284^2 .

It is a cyclic number.

It is not a de Polignac number, because 20312323241057 - 2³² = 20308028273761 is a prime.

Together with 20312323241059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20312323241059) 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, 10156161620528 + 10156161620529.

It is an arithmetic number, because the mean of its divisors is an integer number (10156161620529).

Almost surely, 2^{20312323241057} is an apocalyptic number.

It is an amenable number.

20312323241057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312323241057 is an equidigital number, since it uses as much as digits as its factorization.

20312323241057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 20312323241057 its reverse (75014232321302), we get a palindrome (95326555562359).

The spelling of 20312323241057 in words is "twenty trillion, three hundred twelve billion, three hundred twenty-three million, two hundred forty-one thousand, fifty-seven".