20003203057 has 2 divisors, whose sum is σ = 20003203058. Its totient is φ = 20003203056.

The previous prime is 20003203043. The next prime is 20003203139. The reversal of 20003203057 is 75030230002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16858685281 + 3144517776 = 129841^2 + 56076^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003203057 - 2²³ = 19994814449 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003207057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001601528 + 10001601529.

It is an arithmetic number, because the mean of its divisors is an integer number (10001601529).

Almost surely, 2^20003203057 is an apocalyptic number.

It is an amenable number.

20003203057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003203057 is an equidigital number, since it uses as much as digits as its factorization.

20003203057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 22.

Adding to 20003203057 its reverse (75030230002), we get a palindrome (95033433059).

The spelling of 20003203057 in words is "twenty billion, three million, two hundred three thousand, fifty-seven".