20103144340 has 24 divisors (see below), whose sum is σ = 42932141280. Its totient is φ = 7904964768.

The previous prime is 20103144331. The next prime is 20103144343. The reversal of 20103144340 is 4344130102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103144343) 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, 8517102 + ... + 8519461.

It is an arithmetic number, because the mean of its divisors is an integer number (1788839220).

Almost surely, 2^20103144340 is an apocalyptic number.

20103144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103144340 is an abundant number, since it is smaller than the sum of its proper divisors (22828996940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20103144340 is a wasteful number, since it uses less digits than its factorization.

20103144340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036631 (or 17036629 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20103144340 its reverse (4344130102), we get a palindrome (24447274442).

The spelling of 20103144340 in words is "twenty billion, one hundred three million, one hundred forty-four thousand, three hundred forty".