20103213073 has 2 divisors, whose sum is σ = 20103213074. Its totient is φ = 20103213072.

The previous prime is 20103213059. The next prime is 20103213077. The reversal of 20103213073 is 37031230102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16324406289 + 3778806784 = 127767^2 + 61472^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103213073 - 2¹³ = 20103204881 is a prime.

It is not a weakly prime, because it can be changed into another prime (20103213077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051606536 + 10051606537.

It is an arithmetic number, because the mean of its divisors is an integer number (10051606537).

Almost surely, 2^20103213073 is an apocalyptic number.

It is an amenable number.

20103213073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103213073 is an equidigital number, since it uses as much as digits as its factorization.

20103213073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

Adding to 20103213073 its reverse (37031230102), we get a palindrome (57134443175).

The spelling of 20103213073 in words is "twenty billion, one hundred three million, two hundred thirteen thousand, seventy-three".