20300312345 has 8 divisors (see below), whose sum is σ = 24361370376. Its totient is φ = 16239586176.

The previous prime is 20300312339. The next prime is 20300312353. The reversal of 20300312345 is 54321300302.

It can be written as a sum of positive squares in 4 ways, for example, as 427207561 + 19873104784 = 20669^2 + 140972^2 .

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 20300312345 - 2⁶ = 20300312281 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 20300312345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81119 + ... + 217211.

It is an arithmetic number, because the mean of its divisors is an integer number (3045171297).

Almost surely, 2^20300312345 is an apocalyptic number.

It is an amenable number.

20300312345 is a deficient number, since it is larger than the sum of its proper divisors (4061058031).

20300312345 is a wasteful number, since it uses less digits than its factorization.

20300312345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165931.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 20300312345 its reverse (54321300302), we get a palindrome (74621612647).

The spelling of 20300312345 in words is "twenty billion, three hundred million, three hundred twelve thousand, three hundred forty-five".