11213231331 has 64 divisors (see below), whose sum is σ = 16832793600. Its totient is φ = 6603227136.

The previous prime is 11213231299. The next prime is 11213231339. The reversal of 11213231331 is 13313231211.

It is a happy number.

11213231331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11213231331 - 2⁵ = 11213231299 is a prime.

It is a super-2 number, since 2×11213231331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11213231298 and 11213231307.

It is not an unprimeable number, because it can be changed into a prime (11213231339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15815205 + ... + 15815913.

It is an arithmetic number, because the mean of its divisors is an integer number (263012400).

Almost surely, 2^11213231331 is an apocalyptic number.

11213231331 is a deficient number, since it is larger than the sum of its proper divisors (5619562269).

11213231331 is a wasteful number, since it uses less digits than its factorization.

11213231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its digits is 324, while the sum is 21.

Adding to 11213231331 its reverse (13313231211), we get a palindrome (24526462542).

The spelling of 11213231331 in words is "eleven billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred thirty-one".