20130312133 has 8 divisors (see below), whose sum is σ = 20418652800. Its totient is φ = 19842105360.

The previous prime is 20130312131. The next prime is 20130312161. The reversal of 20130312133 is 33121303102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20130312133 - 2¹ = 20130312131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20130312133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130312131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291816 + ... + 354142.

It is an arithmetic number, because the mean of its divisors is an integer number (2552331600).

Almost surely, 2^20130312133 is an apocalyptic number.

It is an amenable number.

20130312133 is a deficient number, since it is larger than the sum of its proper divisors (288340667).

20130312133 is an equidigital number, since it uses as much as digits as its factorization.

20130312133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66947.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20130312133 its reverse (33121303102), we get a palindrome (53251615235).

The spelling of 20130312133 in words is "twenty billion, one hundred thirty million, three hundred twelve thousand, one hundred thirty-three".