20131333311 has 4 divisors (see below), whose sum is σ = 26841777752. Its totient is φ = 13420888872.

The previous prime is 20131333307. The next prime is 20131333333. The reversal of 20131333311 is 11333313102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20131333311 - 2² = 20131333307 is a prime.

It is a super-3 number, since 3×20131333311³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20138333311) 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, 3355222216 + ... + 3355222221.

It is an arithmetic number, because the mean of its divisors is an integer number (6710444438).

Almost surely, 2^20131333311 is an apocalyptic number.

20131333311 is a deficient number, since it is larger than the sum of its proper divisors (6710444441).

20131333311 is an equidigital number, since it uses as much as digits as its factorization.

20131333311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710444440.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 20131333311 its reverse (11333313102), we get a palindrome (31464646413).

The spelling of 20131333311 in words is "twenty billion, one hundred thirty-one million, three hundred thirty-three thousand, three hundred eleven".