Search a number
-
+
12203312311 = 12739957949
BaseRepresentation
bin10110101110101111…
…11100010010110111
31011111110200111102001
423113113330102313
5144443021443221
65334531200131
7611260305001
oct132727742267
934443614361
1012203312311
1151a24a7183
122446a46047
1311c630b678
1483aa23371
154b6531391
hex2d75fc4b7

12203312311 has 4 divisors (see below), whose sum is σ = 12204283000. Its totient is φ = 12202341624.

The previous prime is 12203312293. The next prime is 12203312357. The reversal of 12203312311 is 11321330221.

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 12203312311 - 25 = 12203312279 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 (12203316311) 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, 466236 + ... + 491713.

It is an arithmetic number, because the mean of its divisors is an integer number (3051070750).

Almost surely, 212203312311 is an apocalyptic number.

12203312311 is a deficient number, since it is larger than the sum of its proper divisors (970689).

12203312311 is an equidigital number, since it uses as much as digits as its factorization.

12203312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970688.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12203312311 its reverse (11321330221), we get a palindrome (23524642532).

The spelling of 12203312311 in words is "twelve billion, two hundred three million, three hundred twelve thousand, three hundred eleven".

Divisors: 1 12739 957949 12203312311