20130320111 has 4 divisors (see below), whose sum is σ = 21960349224. Its totient is φ = 18300291000.

The previous prime is 20130320047. The next prime is 20130320117. The reversal of 20130320111 is 11102303102.

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 20130320111 - 2⁶ = 20130320047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130320117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915014540 + ... + 915014561.

It is an arithmetic number, because the mean of its divisors is an integer number (5490087306).

Almost surely, 2^20130320111 is an apocalyptic number.

20130320111 is a deficient number, since it is larger than the sum of its proper divisors (1830029113).

20130320111 is a wasteful number, since it uses less digits than its factorization.

20130320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830029112.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20130320111 its reverse (11102303102), we get a palindrome (31232623213).

The spelling of 20130320111 in words is "twenty billion, one hundred thirty million, three hundred twenty thousand, one hundred eleven".