11012311333231 has 4 divisors (see below), whose sum is σ = 11859412205032. Its totient is φ = 10165210461432.

The previous prime is 11012311333193. The next prime is 11012311333253. The reversal of 11012311333231 is 13233311321011.

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

It is not a de Polignac number, because 11012311333231 - 2¹⁷ = 11012311202159 is a prime.

It is a super-2 number, since 2×11012311333231² (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 = 11012311333196 and 11012311333205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012311333531) 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, 423550435881 + ... + 423550435906.

It is an arithmetic number, because the mean of its divisors is an integer number (2964853051258).

Almost surely, 2^{11012311333231} is an apocalyptic number.

11012311333231 is a deficient number, since it is larger than the sum of its proper divisors (847100871801).

11012311333231 is an equidigital number, since it uses as much as digits as its factorization.

11012311333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847100871800.

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

Adding to 11012311333231 its reverse (13233311321011), we get a palindrome (24245622654242).

The spelling of 11012311333231 in words is "eleven trillion, twelve billion, three hundred eleven million, three hundred thirty-three thousand, two hundred thirty-one".