20343123311 has 8 divisors (see below), whose sum is σ = 23250685344. Its totient is φ = 17435911680.

The previous prime is 20343123257. The next prime is 20343123347. The reversal of 20343123311 is 11332134302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20343123311 - 2¹⁰ = 20343122287 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 (20343123011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51551 + ... + 208191.

It is an arithmetic number, because the mean of its divisors is an integer number (2906335668).

Almost surely, 2^20343123311 is an apocalyptic number.

20343123311 is a deficient number, since it is larger than the sum of its proper divisors (2907562033).

20343123311 is a wasteful number, since it uses less digits than its factorization.

20343123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175201.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20343123311 its reverse (11332134302), we get a palindrome (31675257613).

The spelling of 20343123311 in words is "twenty billion, three hundred forty-three million, one hundred twenty-three thousand, three hundred eleven".