20423102313 has 4 divisors (see below), whose sum is σ = 27230803088. Its totient is φ = 13615401540.

The previous prime is 20423102291. The next prime is 20423102363. The reversal of 20423102313 is 31320132402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20423102313 - 2¹² = 20423098217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20423102313.

It is not an unprimeable number, because it can be changed into a prime (20423102363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3403850383 + ... + 3403850388.

It is an arithmetic number, because the mean of its divisors is an integer number (6807700772).

Almost surely, 2^20423102313 is an apocalyptic number.

It is an amenable number.

20423102313 is a deficient number, since it is larger than the sum of its proper divisors (6807700775).

20423102313 is an equidigital number, since it uses as much as digits as its factorization.

20423102313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6807700774.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20423102313 its reverse (31320132402), we get a palindrome (51743234715).

The spelling of 20423102313 in words is "twenty billion, four hundred twenty-three million, one hundred two thousand, three hundred thirteen".