11331313313 has 4 divisors (see below), whose sum is σ = 11338357380. Its totient is φ = 11324269248.

The previous prime is 11331313283. The next prime is 11331313319. The reversal of 11331313313 is 31331313311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31331313311 = 29191 ⋅1073321.

It can be written as a sum of positive squares in 2 ways, for example, as 5927152144 + 5404161169 = 76988^2 + 73513^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331313313 - 2¹⁸ = 11331051169 is a prime.

It is a super-2 number, since 2×11331313313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331313319) 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, 3519620 + ... + 3522837.

It is an arithmetic number, because the mean of its divisors is an integer number (2834589345).

Almost surely, 2^11331313313 is an apocalyptic number.

It is an amenable number.

11331313313 is a deficient number, since it is larger than the sum of its proper divisors (7044067).

11331313313 is an equidigital number, since it uses as much as digits as its factorization.

11331313313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044066.

The product of its digits is 729, while the sum is 23.

Adding to 11331313313 its reverse (31331313311), we get a palindrome (42662626624).

The spelling of 11331313313 in words is "eleven billion, three hundred thirty-one million, three hundred thirteen thousand, three hundred thirteen".