20340131111 has 8 divisors (see below), whose sum is σ = 20576563200. Its totient is φ = 20103874560.

The previous prime is 20340131093. The next prime is 20340131171. The reversal of 20340131111 is 11113104302.

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 20340131111 - 2³⁴ = 3160261927 is a prime.

It is a super-2 number, since 2×20340131111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20340131111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340131171) 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 7 ways as a sum of consecutive naturals, for example, 196826 + ... + 281816.

It is an arithmetic number, because the mean of its divisors is an integer number (2572070400).

Almost surely, 2^20340131111 is an apocalyptic number.

20340131111 is a deficient number, since it is larger than the sum of its proper divisors (236432089).

20340131111 is an equidigital number, since it uses as much as digits as its factorization.

20340131111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87769.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20340131111 its reverse (11113104302), we get a palindrome (31453235413).

The spelling of 20340131111 in words is "twenty billion, three hundred forty million, one hundred thirty-one thousand, one hundred eleven".