20031132013 has 4 divisors (see below), whose sum is σ = 20035194300. Its totient is φ = 20027069728.

The previous prime is 20031132001. The next prime is 20031132029. The reversal of 20031132013 is 31023113002.

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 8070866244 + 11960265769 = 89838^2 + 109363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031132013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031133013) 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 3 ways as a sum of consecutive naturals, for example, 2023738 + ... + 2033611.

It is an arithmetic number, because the mean of its divisors is an integer number (5008798575).

Almost surely, 2^20031132013 is an apocalyptic number.

It is an amenable number.

20031132013 is a deficient number, since it is larger than the sum of its proper divisors (4062287).

20031132013 is an equidigital number, since it uses as much as digits as its factorization.

20031132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062286.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20031132013 its reverse (31023113002), we get a palindrome (51054245015).

It can be divided in two parts, 200311 and 32013, that added together give a square (232324 = 482²).

The spelling of 20031132013 in words is "twenty billion, thirty-one million, one hundred thirty-two thousand, thirteen".