20323231313 has 8 divisors (see below), whose sum is σ = 25338054720. Its totient is φ = 15836284080.

The previous prime is 20323231309. The next prime is 20323231361. The reversal of 20323231313 is 31313232302.

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 20323231313 - 2² = 20323231309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20323231393) 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, 131968958 + ... + 131969111.

It is an arithmetic number, because the mean of its divisors is an integer number (3167256840).

Almost surely, 2^20323231313 is an apocalyptic number.

It is an amenable number.

20323231313 is a deficient number, since it is larger than the sum of its proper divisors (5014823407).

20323231313 is a wasteful number, since it uses less digits than its factorization.

20323231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263938087.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20323231313 its reverse (31313232302), we get a palindrome (51636463615).

The spelling of 20323231313 in words is "twenty billion, three hundred twenty-three million, two hundred thirty-one thousand, three hundred thirteen".