12311133011 has 4 divisors (see below), whose sum is σ = 12959087400. Its totient is φ = 11663178624.

The previous prime is 12311132971. The next prime is 12311133059. The reversal of 12311133011 is 11033111321.

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 12311133011 - 2¹⁸ = 12310870867 is a prime.

It is a super-2 number, since 2×12311133011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311133061) 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, 323977166 + ... + 323977203.

It is an arithmetic number, because the mean of its divisors is an integer number (3239771850).

Almost surely, 2^12311133011 is an apocalyptic number.

12311133011 is a deficient number, since it is larger than the sum of its proper divisors (647954389).

12311133011 is an equidigital number, since it uses as much as digits as its factorization.

12311133011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647954388.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 12311133011 its reverse (11033111321), we get a palindrome (23344244332).

The spelling of 12311133011 in words is "twelve billion, three hundred eleven million, one hundred thirty-three thousand, eleven".