12031032011 has 4 divisors (see below), whose sum is σ = 12040806624. Its totient is φ = 12021257400.

The previous prime is 12031031939. The next prime is 12031032031. The reversal of 12031032011 is 11023013021.

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 12031032011 - 2¹⁴ = 12031015627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031032031) 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, 4885460 + ... + 4887921.

It is an arithmetic number, because the mean of its divisors is an integer number (3010201656).

Almost surely, 2^12031032011 is an apocalyptic number.

12031032011 is a deficient number, since it is larger than the sum of its proper divisors (9774613).

12031032011 is an equidigital number, since it uses as much as digits as its factorization.

12031032011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9774612.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12031032011 its reverse (11023013021), we get a palindrome (23054045032).

The spelling of 12031032011 in words is "twelve billion, thirty-one million, thirty-two thousand, eleven".