11031212031 has 8 divisors (see below), whose sum is σ = 16809465984. Its totient is φ = 6303549720.

The previous prime is 11031212011. The next prime is 11031212039. The reversal of 11031212031 is 13021213011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11031212031 - 2⁷ = 11031211903 is a prime.

It is a super-2 number, since 2×11031212031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11031212031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031212039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262647885 + ... + 262647926.

It is an arithmetic number, because the mean of its divisors is an integer number (2101183248).

Almost surely, 2^11031212031 is an apocalyptic number.

11031212031 is a deficient number, since it is larger than the sum of its proper divisors (5778253953).

11031212031 is an equidigital number, since it uses as much as digits as its factorization.

11031212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525295821.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11031212031 its reverse (13021213011), we get a palindrome (24052425042).

The spelling of 11031212031 in words is "eleven billion, thirty-one million, two hundred twelve thousand, thirty-one".