20003231057 has 2 divisors, whose sum is σ = 20003231058. Its totient is φ = 20003231056.

The previous prime is 20003231021. The next prime is 20003231063. The reversal of 20003231057 is 75013230002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13022461456 + 6980769601 = 114116^2 + 83551^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003231057 - 2²⁰ = 20002182481 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003251057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001615528 + 10001615529.

It is an arithmetic number, because the mean of its divisors is an integer number (10001615529).

Almost surely, 2^20003231057 is an apocalyptic number.

It is an amenable number.

20003231057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003231057 is an equidigital number, since it uses as much as digits as its factorization.

20003231057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

Adding to 20003231057 its reverse (75013230002), we get a palindrome (95016461059).

The spelling of 20003231057 in words is "twenty billion, three million, two hundred thirty-one thousand, fifty-seven".