20103100057 has 2 divisors, whose sum is σ = 20103100058. Its totient is φ = 20103100056.

The previous prime is 20103100009. The next prime is 20103100079. The reversal of 20103100057 is 75000130102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17624155536 + 2478944521 = 132756^2 + 49789^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103100057 - 2³¹ = 17955616409 is a prime.

It is not a weakly prime, because it can be changed into another prime (20103109057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051550028 + 10051550029.

It is an arithmetic number, because the mean of its divisors is an integer number (10051550029).

Almost surely, 2^20103100057 is an apocalyptic number.

It is an amenable number.

20103100057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103100057 is an equidigital number, since it uses as much as digits as its factorization.

20103100057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

Adding to 20103100057 its reverse (75000130102), we get a palindrome (95103230159).

The spelling of 20103100057 in words is "twenty billion, one hundred three million, one hundred thousand, fifty-seven".