20103519 has 8 divisors (see below), whose sum is σ = 26843392. Its totient is φ = 13383000.

The previous prime is 20103511. The next prime is 20103533. The reversal of 20103519 is 91530102.

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

It is not a de Polignac number, because 20103519 - 2³ = 20103511 is a prime.

It is a super-2 number, since 2×20103519² = 808302952366722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20103495 and 20103504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2209 + ... + 6714.

It is an arithmetic number, because the mean of its divisors is an integer number (3355424).

Almost surely, 2^20103519 is an apocalyptic number.

20103519 is a deficient number, since it is larger than the sum of its proper divisors (6739873).

20103519 is an equidigital number, since it uses as much as digits as its factorization.

20103519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 20103519 is about 4483.6947933596. The cubic root of 20103519 is about 271.9092789649.

The spelling of 20103519 in words is "twenty million, one hundred three thousand, five hundred nineteen".