20031202313 has 8 divisors (see below), whose sum is σ = 20129526600. Its totient is φ = 19933119360.

The previous prime is 20031202307. The next prime is 20031202349. The reversal of 20031202313 is 31320213002.

It can be written as a sum of positive squares in 4 ways, for example, as 22534009 + 20008668304 = 4747^2 + 141452^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031202313 is a prime.

It is a super-2 number, since 2×20031202313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20031202291 and 20031202300.

It is not an unprimeable number, because it can be changed into a prime (20031202913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107213 + ... + 227061.

It is an arithmetic number, because the mean of its divisors is an integer number (2516190825).

Almost surely, 2^20031202313 is an apocalyptic number.

It is an amenable number.

20031202313 is a deficient number, since it is larger than the sum of its proper divisors (98324287).

20031202313 is a wasteful number, since it uses less digits than its factorization.

20031202313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120667.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20031202313 its reverse (31320213002), we get a palindrome (51351415315).

The spelling of 20031202313 in words is "twenty billion, thirty-one million, two hundred two thousand, three hundred thirteen".