11313840385 has 4 divisors (see below), whose sum is σ = 13576608468. Its totient is φ = 9051072304.

The previous prime is 11313840371. The next prime is 11313840457. The reversal of 11313840385 is 58304831311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58304831311 = 160603 ⋅363037.

It can be written as a sum of positive squares in 2 ways, for example, as 5858983936 + 5454856449 = 76544^2 + 73857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11313840385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131384034 + ... + 1131384043.

It is an arithmetic number, because the mean of its divisors is an integer number (3394152117).

Almost surely, 2^11313840385 is an apocalyptic number.

It is an amenable number.

11313840385 is a deficient number, since it is larger than the sum of its proper divisors (2262768083).

11313840385 is an equidigital number, since it uses as much as digits as its factorization.

11313840385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262768082.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 11313840385 in words is "eleven billion, three hundred thirteen million, eight hundred forty thousand, three hundred eighty-five".