20031130033 has 4 divisors (see below), whose sum is σ = 20032154100. Its totient is φ = 20030105968.

The previous prime is 20031130003. The next prime is 20031130037. The reversal of 20031130033 is 33003113002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12397263649 + 7633866384 = 111343^2 + 87372^2 .

It is a cyclic number.

It is not a de Polignac number, because 20031130033 - 2¹³ = 20031121841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20031129989 and 20031130016.

It is not an unprimeable number, because it can be changed into a prime (20031130037) 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, 482110 + ... + 522007.

It is an arithmetic number, because the mean of its divisors is an integer number (5008038525).

Almost surely, 2^20031130033 is an apocalyptic number.

It is an amenable number.

20031130033 is a deficient number, since it is larger than the sum of its proper divisors (1024067).

20031130033 is a wasteful number, since it uses less digits than its factorization.

20031130033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024066.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 20031130033 its reverse (33003113002), we get a palindrome (53034243035).

The spelling of 20031130033 in words is "twenty billion, thirty-one million, one hundred thirty thousand, thirty-three".