20321212313 has 8 divisors (see below), whose sum is σ = 20411165568. Its totient is φ = 20231419104.

The previous prime is 20321212297. The next prime is 20321212337. The reversal of 20321212313 is 31321212302.

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 20321212313 - 2⁴ = 20321212297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321212343) 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, 218156 + ... + 297042.

It is an arithmetic number, because the mean of its divisors is an integer number (2551395696).

Almost surely, 2^20321212313 is an apocalyptic number.

It is an amenable number.

20321212313 is a deficient number, since it is larger than the sum of its proper divisors (89953255).

20321212313 is an equidigital number, since it uses as much as digits as its factorization.

20321212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80023.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20321212313 its reverse (31321212302), we get a palindrome (51642424615).

The spelling of 20321212313 in words is "twenty billion, three hundred twenty-one million, two hundred twelve thousand, three hundred thirteen".