20302313111 has 4 divisors (see below), whose sum is σ = 20303385792. Its totient is φ = 20301240432.

The previous prime is 20302312993. The next prime is 20302313113. The reversal of 20302313111 is 11131320302.

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 20302313111 - 2¹⁰ = 20302312087 is a prime.

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 20302313111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302313113) 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 3 ways as a sum of consecutive naturals, for example, 507431 + ... + 545976.

It is an arithmetic number, because the mean of its divisors is an integer number (5075846448).

Almost surely, 2^20302313111 is an apocalyptic number.

20302313111 is a deficient number, since it is larger than the sum of its proper divisors (1072681).

20302313111 is a wasteful number, since it uses less digits than its factorization.

20302313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072680.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20302313111 its reverse (11131320302), we get a palindrome (31433633413).

The spelling of 20302313111 in words is "twenty billion, three hundred two million, three hundred thirteen thousand, one hundred eleven".