11031212132231 has 4 divisors (see below), whose sum is σ = 11186581317264. Its totient is φ = 10875842947200.

The previous prime is 11031212132189. The next prime is 11031212132233. The reversal of 11031212132231 is 13223121213011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11031212132231 - 2⁶ = 11031212132167 is a prime.

It is a super-2 number, since 2×11031212132231² (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 = 11031212132197 and 11031212132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031212132233) 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, 77684592410 + ... + 77684592551.

It is an arithmetic number, because the mean of its divisors is an integer number (2796645329316).

Almost surely, 2^{11031212132231} is an apocalyptic number.

11031212132231 is a deficient number, since it is larger than the sum of its proper divisors (155369185033).

11031212132231 is an equidigital number, since it uses as much as digits as its factorization.

11031212132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155369185032.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11031212132231 its reverse (13223121213011), we get a palindrome (24254333345242).

The spelling of 11031212132231 in words is "eleven trillion, thirty-one billion, two hundred twelve million, one hundred thirty-two thousand, two hundred thirty-one".