1361530111 has 2 divisors, whose sum is σ = 1361530112. Its totient is φ = 1361530110.

The previous prime is 1361530109. The next prime is 1361530123. The reversal of 1361530111 is 1110351631.

It is a weak prime.

It is an emirp because it is prime and its reverse (1110351631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361530111 - 2¹ = 1361530109 is a prime.

Together with 1361530109, 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 (1361530211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680765055 + 680765056.

It is an arithmetic number, because the mean of its divisors is an integer number (680765056).

Almost surely, 2^1361530111 is an apocalyptic number.

1361530111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361530111 is an equidigital number, since it uses as much as digits as its factorization.

1361530111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1361530111 is about 36898.9174773461. The cubic root of 1361530111 is about 1108.3470001342.

Adding to 1361530111 its reverse (1110351631), we get a palindrome (2471881742).

The spelling of 1361530111 in words is "one billion, three hundred sixty-one million, five hundred thirty thousand, one hundred eleven".