1305144011 has 4 divisors (see below), whose sum is σ = 1316694072. Its totient is φ = 1293593952.

The previous prime is 1305143999. The next prime is 1305144053. The reversal of 1305144011 is 1104415031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1305144011 - 2¹⁰ = 1305142987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305143011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5774861 + ... + 5775086.

It is an arithmetic number, because the mean of its divisors is an integer number (329173518).

Almost surely, 2^1305144011 is an apocalyptic number.

1305144011 is a deficient number, since it is larger than the sum of its proper divisors (11550061).

1305144011 is a wasteful number, since it uses less digits than its factorization.

1305144011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11550060.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1305144011 is about 36126.7769251562. The cubic root of 1305144011 is about 1092.8305108336.

Adding to 1305144011 its reverse (1104415031), we get a palindrome (2409559042).

The spelling of 1305144011 in words is "one billion, three hundred five million, one hundred forty-four thousand, eleven".