1003103181601 has 2 divisors, whose sum is σ = 1003103181602. Its totient is φ = 1003103181600.

The previous prime is 1003103181589. The next prime is 1003103181611. The reversal of 1003103181601 is 1061813013001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756691214400 + 246411967201 = 869880^2 + 496399^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003103181601 - 2³¹ = 1000955697953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1003103181611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501551590800 + 501551590801.

It is an arithmetic number, because the mean of its divisors is an integer number (501551590801).

Almost surely, 2^{1003103181601} is an apocalyptic number.

It is an amenable number.

1003103181601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003103181601 is an equidigital number, since it uses as much as digits as its factorization.

1003103181601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 1003103181601 its reverse (1061813013001), we get a palindrome (2064916194602).

The spelling of 1003103181601 in words is "one trillion, three billion, one hundred three million, one hundred eighty-one thousand, six hundred one".