20130231333 has 4 divisors (see below), whose sum is σ = 26840308448. Its totient is φ = 13420154220.

The previous prime is 20130231311. The next prime is 20130231337. The reversal of 20130231333 is 33313203102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20130231333 - 2²⁴ = 20113454117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130231337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3355038553 + ... + 3355038558.

It is an arithmetic number, because the mean of its divisors is an integer number (6710077112).

Almost surely, 2^20130231333 is an apocalyptic number.

It is an amenable number.

20130231333 is a deficient number, since it is larger than the sum of its proper divisors (6710077115).

20130231333 is an equidigital number, since it uses as much as digits as its factorization.

20130231333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710077114.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20130231333 its reverse (33313203102), we get a palindrome (53443434435).

The spelling of 20130231333 in words is "twenty billion, one hundred thirty million, two hundred thirty-one thousand, three hundred thirty-three".