20131302111 has 8 divisors (see below), whose sum is σ = 27181505280. Its totient is φ = 13250983512.

The previous prime is 20131302101. The next prime is 20131302179. The reversal of 20131302111 is 11120313102.

It is a happy number.

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

It is not a de Polignac number, because 20131302111 - 2¹⁵ = 20131269343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131302101) 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 7 ways as a sum of consecutive naturals, for example, 42470865 + ... + 42471338.

It is an arithmetic number, because the mean of its divisors is an integer number (3397688160).

Almost surely, 2^20131302111 is an apocalyptic number.

20131302111 is a deficient number, since it is larger than the sum of its proper divisors (7050203169).

20131302111 is an equidigital number, since it uses as much as digits as its factorization.

20131302111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84942285.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20131302111 its reverse (11120313102), we get a palindrome (31251615213).

The spelling of 20131302111 in words is "twenty billion, one hundred thirty-one million, three hundred two thousand, one hundred eleven".