20301311133 has 12 divisors (see below), whose sum is σ = 29328078780. Its totient is φ = 13532378496.

The previous prime is 20301311131. The next prime is 20301311137. The reversal of 20301311133 is 33111310302.

It is a happy number.

20301311133 is a `hidden beast` number, since 20 + 301 + 311 + 1 + 33 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81324324 + 20219986809 = 9018^2 + 142197^2 .

It is not a de Polignac number, because 20301311133 - 2¹ = 20301311131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301311131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80316 + ... + 216917.

It is an arithmetic number, because the mean of its divisors is an integer number (2444006565).

Almost surely, 2^20301311133 is an apocalyptic number.

It is an amenable number.

20301311133 is a deficient number, since it is larger than the sum of its proper divisors (9026767647).

20301311133 is a wasteful number, since it uses less digits than its factorization.

20301311133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304828 (or 304825 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20301311133 its reverse (33111310302), we get a palindrome (53412621435).

The spelling of 20301311133 in words is "twenty billion, three hundred one million, three hundred eleven thousand, one hundred thirty-three".