11013312133231 has 4 divisors (see below), whose sum is σ = 11036895243192. Its totient is φ = 10989729023272.

The previous prime is 11013312133217. The next prime is 11013312133249. The reversal of 11013312133231 is 13233121331011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11013312133231 is a prime.

It is a super-2 number, since 2×11013312133231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11013312133196 and 11013312133205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013312103231) 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, 11791554280 + ... + 11791555213.

It is an arithmetic number, because the mean of its divisors is an integer number (2759223810798).

Almost surely, 2^{11013312133231} is an apocalyptic number.

11013312133231 is a deficient number, since it is larger than the sum of its proper divisors (23583109961).

11013312133231 is an equidigital number, since it uses as much as digits as its factorization.

11013312133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23583109960.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 11013312133231 its reverse (13233121331011), we get a palindrome (24246433464242).

The spelling of 11013312133231 in words is "eleven trillion, thirteen billion, three hundred twelve million, one hundred thirty-three thousand, two hundred thirty-one".