11011231313 has 4 divisors (see below), whose sum is σ = 11658950820. Its totient is φ = 10363511808.

The previous prime is 11011231277. The next prime is 11011231327. The reversal of 11011231313 is 31313211011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3771433744 + 7239797569 = 61412^2 + 85087^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011231313 - 2²² = 11007037009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 647719489 = 11011231313 / (1 + 1 + 0 + 1 + 1 + 2 + 3 + 1 + 3 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011231291 and 11011231300.

It is not an unprimeable number, because it can be changed into a prime (11011231373) 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, 323859728 + ... + 323859761.

It is an arithmetic number, because the mean of its divisors is an integer number (2914737705).

Almost surely, 2^11011231313 is an apocalyptic number.

It is an amenable number.

11011231313 is a deficient number, since it is larger than the sum of its proper divisors (647719507).

11011231313 is an equidigital number, since it uses as much as digits as its factorization.

11011231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647719506.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11011231313 its reverse (31313211011), we get a palindrome (42324442324).

The spelling of 11011231313 in words is "eleven billion, eleven million, two hundred thirty-one thousand, three hundred thirteen".