20312404105 has 16 divisors (see below), whose sum is σ = 27899702784. Its totient is φ = 13907160000.

The previous prime is 20312404097. The next prime is 20312404111. The reversal of 20312404105 is 50140421302.

It is not a de Polignac number, because 20312404105 - 2³ = 20312404097 is a prime.

It is a super-4 number, since 4×20312404105⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421521 + ... + 467230.

It is an arithmetic number, because the mean of its divisors is an integer number (1743731424).

Almost surely, 2^20312404105 is an apocalyptic number.

It is an amenable number.

20312404105 is a deficient number, since it is larger than the sum of its proper divisors (7587298679).

20312404105 is an equidigital number, since it uses as much as digits as its factorization.

20312404105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889416.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20312404105 its reverse (50140421302), we get a palindrome (70452825407).

The spelling of 20312404105 in words is "twenty billion, three hundred twelve million, four hundred four thousand, one hundred five".