20331321313 has 8 divisors (see below), whose sum is σ = 20510098560. Its totient is φ = 20153223360.

The previous prime is 20331321299. The next prime is 20331321337. The reversal of 20331321313 is 31312313302.

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-20331321313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331331313) 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, 109608 + ... + 229513.

It is an arithmetic number, because the mean of its divisors is an integer number (2563762320).

Almost surely, 2^20331321313 is an apocalyptic number.

It is an amenable number.

20331321313 is a deficient number, since it is larger than the sum of its proper divisors (178777247).

20331321313 is a wasteful number, since it uses less digits than its factorization.

20331321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339647.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20331321313 its reverse (31312313302), we get a palindrome (51643634615).

The spelling of 20331321313 in words is "twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, three hundred thirteen".