1103554261309 has 2 divisors, whose sum is σ = 1103554261310. Its totient is φ = 1103554261308.

The previous prime is 1103554261307. The next prime is 1103554261319. The reversal of 1103554261309 is 9031624553011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881786731225 + 221767530084 = 939035^2 + 470922^2 .

It is an emirp because it is prime and its reverse (9031624553011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103554261309 - 2¹ = 1103554261307 is a prime.

Together with 1103554261307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103554261307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551777130654 + 551777130655.

It is an arithmetic number, because the mean of its divisors is an integer number (551777130655).

Almost surely, 2^{1103554261309} is an apocalyptic number.

It is an amenable number.

1103554261309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103554261309 is an equidigital number, since it uses as much as digits as its factorization.

1103554261309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 1103554261309 in words is "one trillion, one hundred three billion, five hundred fifty-four million, two hundred sixty-one thousand, three hundred nine".