20331040311 has 16 divisors (see below), whose sum is σ = 30349989120. Its totient is φ = 13450558680.

The previous prime is 20331040291. The next prime is 20331040337. The reversal of 20331040311 is 11304013302.

20331040311 is a `hidden beast` number, since 2 + 0 + 3 + 310 + 40 + 311 = 666.

It is not a de Polignac number, because 20331040311 - 2¹³ = 20331032119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331040381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2870515 + ... + 2877588.

It is an arithmetic number, because the mean of its divisors is an integer number (1896874320).

Almost surely, 2^20331040311 is an apocalyptic number.

20331040311 is a deficient number, since it is larger than the sum of its proper divisors (10018948809).

20331040311 is a wasteful number, since it uses less digits than its factorization.

20331040311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748243 (or 5748237 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20331040311 its reverse (11304013302), we get a palindrome (31635053613).

The spelling of 20331040311 in words is "twenty billion, three hundred thirty-one million, forty thousand, three hundred eleven".