20131112133 has 12 divisors (see below), whose sum is σ = 31721752608. Its totient is φ = 12200673960.

The previous prime is 20131112117. The next prime is 20131112147. The reversal of 20131112133 is 33121113102.

20131112133 is a `hidden beast` number, since 201 + 311 + 121 + 33 = 666.

It is not a de Polignac number, because 20131112133 - 2⁴ = 20131112117 is a prime.

It is a super-2 number, since 2×20131112133² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131112153) 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, 101672185 + ... + 101672382.

It is an arithmetic number, because the mean of its divisors is an integer number (2643479384).

Almost surely, 2^20131112133 is an apocalyptic number.

It is an amenable number.

20131112133 is a deficient number, since it is larger than the sum of its proper divisors (11590640475).

20131112133 is a wasteful number, since it uses less digits than its factorization.

20131112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203344584 (or 203344581 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20131112133 its reverse (33121113102), we get a palindrome (53252225235).

It can be divided in two parts, 201311 and 12133, that added together give a square (213444 = 462²).

The spelling of 20131112133 in words is "twenty billion, one hundred thirty-one million, one hundred twelve thousand, one hundred thirty-three".