20113031133 has 16 divisors (see below), whose sum is σ = 32089167040. Its totient is φ = 12377249712.

The previous prime is 20113031119. The next prime is 20113031137. The reversal of 20113031133 is 33113031102.

It is a happy number.

It is not a de Polignac number, because 20113031133 - 2¹² = 20113027037 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 (20113031137) 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 15 ways as a sum of consecutive naturals, for example, 28650691 + ... + 28651392.

It is an arithmetic number, because the mean of its divisors is an integer number (2005572940).

Almost surely, 2^20113031133 is an apocalyptic number.

It is an amenable number.

20113031133 is a deficient number, since it is larger than the sum of its proper divisors (11976135907).

20113031133 is a wasteful number, since it uses less digits than its factorization.

20113031133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57302105 (or 57302099 counting only the distinct ones).

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

Adding to 20113031133 its reverse (33113031102), we get a palindrome (53226062235).

The spelling of 20113031133 in words is "twenty billion, one hundred thirteen million, thirty-one thousand, one hundred thirty-three".