20131023033 has 48 divisors (see below), whose sum is σ = 33805264896. Its totient is φ = 11421796320.

The previous prime is 20131023023. The next prime is 20131023037. The reversal of 20131023033 is 33032013102.

It is not a de Polignac number, because 20131023033 - 2⁶ = 20131022969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20131022997 and 20131023015.

It is not an unprimeable number, because it can be changed into a prime (20131023037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12966 + ... + 201072.

It is an arithmetic number, because the mean of its divisors is an integer number (704276352).

Almost surely, 2^20131023033 is an apocalyptic number.

20131023033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20131023033 is a deficient number, since it is larger than the sum of its proper divisors (13674241863).

20131023033 is a wasteful number, since it uses less digits than its factorization.

20131023033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188194 (or 188191 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20131023033 its reverse (33032013102), we get a palindrome (53163036135).

The spelling of 20131023033 in words is "twenty billion, one hundred thirty-one million, twenty-three thousand, thirty-three".