20320312013 has 8 divisors (see below), whose sum is σ = 20643673920. Its totient is φ = 19997540640.

The previous prime is 20320312003. The next prime is 20320312027. The reversal of 20320312013 is 31021302302.

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

It is a cyclic number.

It is not a de Polignac number, because 20320312013 - 2³⁴ = 3140442829 is a prime.

It is a super-2 number, since 2×20320312013² (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 = 20320311982 and 20320312000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320312003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78008 + ... + 216161.

It is an arithmetic number, because the mean of its divisors is an integer number (2580459240).

Almost surely, 2^20320312013 is an apocalyptic number.

It is an amenable number.

20320312013 is a deficient number, since it is larger than the sum of its proper divisors (323361907).

20320312013 is a wasteful number, since it uses less digits than its factorization.

20320312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295267.

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

Adding to 20320312013 its reverse (31021302302), we get a palindrome (51341614315).

The spelling of 20320312013 in words is "twenty billion, three hundred twenty million, three hundred twelve thousand, thirteen".