20412243311 has 4 divisors (see below), whose sum is σ = 21116113800. Its totient is φ = 19708372824.

The previous prime is 20412243307. The next prime is 20412243317. The reversal of 20412243311 is 11334221402.

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 20412243311 - 2² = 20412243307 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 (20412243317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351935201 + ... + 351935258.

It is an arithmetic number, because the mean of its divisors is an integer number (5279028450).

Almost surely, 2^20412243311 is an apocalyptic number.

20412243311 is a deficient number, since it is larger than the sum of its proper divisors (703870489).

20412243311 is an equidigital number, since it uses as much as digits as its factorization.

20412243311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703870488.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20412243311 its reverse (11334221402), we get a palindrome (31746464713).

The spelling of 20412243311 in words is "twenty billion, four hundred twelve million, two hundred forty-three thousand, three hundred eleven".