20131303303213 has 4 divisors (see below), whose sum is σ = 20276132823520. Its totient is φ = 19986473782908.

The previous prime is 20131303303171. The next prime is 20131303303291. The reversal of 20131303303213 is 31230330313102.

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 a de Polignac number, because none of the positive numbers 2^k-20131303303213 is a prime.

It is a super-2 number, since 2×20131303303213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131303303913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72414759945 + ... + 72414760222.

It is an arithmetic number, because the mean of its divisors is an integer number (5069033205880).

Almost surely, 2^{20131303303213} is an apocalyptic number.

It is an amenable number.

20131303303213 is a deficient number, since it is larger than the sum of its proper divisors (144829520307).

20131303303213 is a wasteful number, since it uses less digits than its factorization.

20131303303213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144829520306.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 20131303303213 its reverse (31230330313102), we get a palindrome (51361633616315).

The spelling of 20131303303213 in words is "twenty trillion, one hundred thirty-one billion, three hundred three million, three hundred three thousand, two hundred thirteen".