12311011 has 4 divisors (see below), whose sum is σ = 12420072. Its totient is φ = 12201952.

The previous prime is 12310997. The next prime is 12311017. The reversal of 12311011 is 11011321.

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 12311011 - 2⁵ = 12310979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311017) 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, 54361 + ... + 54586.

It is an arithmetic number, because the mean of its divisors is an integer number (3105018).

Almost surely, 2^12311011 is an apocalyptic number.

12311011 is a deficient number, since it is larger than the sum of its proper divisors (109061).

12311011 is a wasteful number, since it uses less digits than its factorization.

12311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109060.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 12311011 is about 3508.7050317745. The cubic root of 12311011 is about 230.9038848527.

Adding to 12311011 its reverse (11011321), we get a palindrome (23322332).

The spelling of 12311011 in words is "twelve million, three hundred eleven thousand, eleven".