20131020033 has 64 divisors (see below), whose sum is σ = 29872281600. Its totient is φ = 12002918400.

The previous prime is 20131020031. The next prime is 20131020053. The reversal of 20131020033 is 33002013102.

It is not a de Polignac number, because 20131020033 - 2¹ = 20131020031 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20131019994 and 20131020021.

It is not an unprimeable number, because it can be changed into a prime (20131020031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22849753 + ... + 22850633.

It is an arithmetic number, because the mean of its divisors is an integer number (466754400).

Almost surely, 2^20131020033 is an apocalyptic number.

It is an amenable number.

20131020033 is a deficient number, since it is larger than the sum of its proper divisors (9741261567).

20131020033 is a wasteful number, since it uses less digits than its factorization.

20131020033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20131020033 its reverse (33002013102), we get a palindrome (53133033135).

The spelling of 20131020033 in words is "twenty billion, one hundred thirty-one million, twenty thousand, thirty-three".