20331313311 has 8 divisors (see below), whose sum is σ = 27206283184. Its totient is φ = 13505276160.

The previous prime is 20331313267. The next prime is 20331313313. The reversal of 20331313311 is 11331313302.

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

It is not a de Polignac number, because 20331313311 - 2¹⁷ = 20331182239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331313313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12232210 + ... + 12233871.

It is an arithmetic number, because the mean of its divisors is an integer number (3400785398).

Almost surely, 2^20331313311 is an apocalyptic number.

20331313311 is a deficient number, since it is larger than the sum of its proper divisors (6874969873).

20331313311 is a wasteful number, since it uses less digits than its factorization.

20331313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24466361.

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

Adding to 20331313311 its reverse (11331313302), we get a palindrome (31662626613).

Subtracting from 20331313311 its reverse (11331313302), we obtain a palindrome (9000000009).

The spelling of 20331313311 in words is "twenty billion, three hundred thirty-one million, three hundred thirteen thousand, three hundred eleven".