12023420311 has 16 divisors (see below), whose sum is σ = 14229857088. Its totient is φ = 9945561600.

The previous prime is 12023420303. The next prime is 12023420341. The reversal of 12023420311 is 11302432021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12023420311 - 2³ = 12023420303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023420341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243010 + ... + 288271.

It is an arithmetic number, because the mean of its divisors is an integer number (889366068).

Almost surely, 2^12023420311 is an apocalyptic number.

12023420311 is a deficient number, since it is larger than the sum of its proper divisors (2206436777).

12023420311 is an equidigital number, since it uses as much as digits as its factorization.

12023420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531402.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12023420311 its reverse (11302432021), we get a palindrome (23325852332).

The spelling of 12023420311 in words is "twelve billion, twenty-three million, four hundred twenty thousand, three hundred eleven".