203021131110073 has 2 divisors, whose sum is σ = 203021131110074. Its totient is φ = 203021131110072.

The previous prime is 203021131110041. The next prime is 203021131110103. The reversal of 203021131110073 is 370011131120302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201933421867584 + 1087709242489 = 14210328^2 + 1042933^2 .

It is a cyclic number.

It is not a de Polignac number, because 203021131110073 - 2⁵ = 203021131110041 is a prime.

It is not a weakly prime, because it can be changed into another prime (203021134110073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101510565555036 + 101510565555037.

It is an arithmetic number, because the mean of its divisors is an integer number (101510565555037).

Almost surely, 2^{203021131110073} is an apocalyptic number.

It is an amenable number.

203021131110073 is a deficient number, since it is larger than the sum of its proper divisors (1).

203021131110073 is an equidigital number, since it uses as much as digits as its factorization.

203021131110073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 203021131110073 its reverse (370011131120302), we get a palindrome (573032262230375).

The spelling of 203021131110073 in words is "two hundred three trillion, twenty-one billion, one hundred thirty-one million, one hundred ten thousand, seventy-three".