20312210013 has 16 divisors (see below), whose sum is σ = 27819939840. Its totient is φ = 13173109056.

The previous prime is 20312209999. The next prime is 20312210063. The reversal of 20312210013 is 31001221302.

It is not a de Polignac number, because 20312210013 - 2²² = 20308015709 is a prime.

It is a super-2 number, since 2×20312210013² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20312209974 and 20312210001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312210063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768331 + ... + 794327.

It is an arithmetic number, because the mean of its divisors is an integer number (1738746240).

Almost surely, 2^20312210013 is an apocalyptic number.

It is an amenable number.

20312210013 is a deficient number, since it is larger than the sum of its proper divisors (7507729827).

20312210013 is a wasteful number, since it uses less digits than its factorization.

20312210013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33076.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20312210013 its reverse (31001221302), we get a palindrome (51313431315).

The spelling of 20312210013 in words is "twenty billion, three hundred twelve million, two hundred ten thousand, thirteen".