20103440307 has 8 divisors (see below), whose sum is σ = 26916741120. Its totient is φ = 13346216520.

The previous prime is 20103440299. The next prime is 20103440323. The reversal of 20103440307 is 70304430102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20103440307 - 2³ = 20103440299 is a prime.

It is a super-2 number, since 2×20103440307² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20103440327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14018419 + ... + 14019852.

It is an arithmetic number, because the mean of its divisors is an integer number (3364592640).

Almost surely, 2^20103440307 is an apocalyptic number.

20103440307 is a deficient number, since it is larger than the sum of its proper divisors (6813300813).

20103440307 is a wasteful number, since it uses less digits than its factorization.

20103440307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28038513.

The product of its (nonzero) digits is 2016, while the sum is 24.

Adding to 20103440307 its reverse (70304430102), we get a palindrome (90407870409).

The spelling of 20103440307 in words is "twenty billion, one hundred three million, four hundred forty thousand, three hundred seven".