203245042513 has 2 divisors, whose sum is σ = 203245042514. Its totient is φ = 203245042512.

The previous prime is 203245042501. The next prime is 203245042577. The reversal of 203245042513 is 315240542302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197591807169 + 5653235344 = 444513^2 + 75188^2 .

It is a cyclic number.

It is not a de Polignac number, because 203245042513 - 2²¹ = 203242945361 is a prime.

It is a super-2 number, since 2×203245042513² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203245012513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101622521256 + 101622521257.

It is an arithmetic number, because the mean of its divisors is an integer number (101622521257).

Almost surely, 2^203245042513 is an apocalyptic number.

It is an amenable number.

203245042513 is a deficient number, since it is larger than the sum of its proper divisors (1).

203245042513 is an equidigital number, since it uses as much as digits as its factorization.

203245042513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 203245042513 its reverse (315240542302), we get a palindrome (518485584815).

The spelling of 203245042513 in words is "two hundred three billion, two hundred forty-five million, forty-two thousand, five hundred thirteen".