11011310309 has 4 divisors (see below), whose sum is σ = 11013429420. Its totient is φ = 11009191200.

The previous prime is 11011310281. The next prime is 11011310339. The reversal of 11011310309 is 90301311011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90301311011 = 23 ⋅3926143957.

It can be written as a sum of positive squares in 2 ways, for example, as 9858504100 + 1152806209 = 99290^2 + 33953^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011310309 - 2¹² = 11011306213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011310339) 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, 1051742 + ... + 1062159.

It is an arithmetic number, because the mean of its divisors is an integer number (2753357355).

Almost surely, 2^11011310309 is an apocalyptic number.

It is an amenable number.

11011310309 is a deficient number, since it is larger than the sum of its proper divisors (2119111).

11011310309 is an equidigital number, since it uses as much as digits as its factorization.

11011310309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119110.

The product of its (nonzero) digits is 81, while the sum is 20.

The spelling of 11011310309 in words is "eleven billion, eleven million, three hundred ten thousand, three hundred nine".