1103505401 has 2 divisors, whose sum is σ = 1103505402. Its totient is φ = 1103505400.

The previous prime is 1103505373. The next prime is 1103505407. The reversal of 1103505401 is 1045053011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 874739776 + 228765625 = 29576^2 + 15125^2 .

It is an emirp because it is prime and its reverse (1045053011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103505401 - 2¹⁰ = 1103504377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1103505407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551752700 + 551752701.

It is an arithmetic number, because the mean of its divisors is an integer number (551752701).

Almost surely, 2^1103505401 is an apocalyptic number.

It is an amenable number.

1103505401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103505401 is an equidigital number, since it uses as much as digits as its factorization.

1103505401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1103505401 is about 33219.0517775568. The cubic root of 1103505401 is about 1033.3754847761.

Adding to 1103505401 its reverse (1045053011), we get a palindrome (2148558412).

The spelling of 1103505401 in words is "one billion, one hundred three million, five hundred five thousand, four hundred one".