1305350011243 has 16 divisors (see below), whose sum is σ = 1394685220320. Its totient is φ = 1217414209536.

The previous prime is 1305350011223. The next prime is 1305350011247. The reversal of 1305350011243 is 3421100535031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1305350011243 - 2²⁵ = 1305316456811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305350011247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8582563 + ... + 8733331.

It is an arithmetic number, because the mean of its divisors is an integer number (87167826270).

Almost surely, 2^{1305350011243} is an apocalyptic number.

1305350011243 is a deficient number, since it is larger than the sum of its proper divisors (89335209077).

1305350011243 is a wasteful number, since it uses less digits than its factorization.

1305350011243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155406.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1305350011243 its reverse (3421100535031), we get a palindrome (4726450546274).

The spelling of 1305350011243 in words is "one trillion, three hundred five billion, three hundred fifty million, eleven thousand, two hundred forty-three".