20103019 has 4 divisors (see below), whose sum is σ = 20140720. Its totient is φ = 20065320.

The previous prime is 20102983. The next prime is 20103047. The reversal of 20103019 is 91030102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20103019 - 2¹³ = 20094827 is a prime.

It is a super-2 number, since 2×20103019² = 808262745828722, 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 = 20102993 and 20103011.

It is not an unprimeable number, because it can be changed into a prime (20103319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18039 + ... + 19120.

It is an arithmetic number, because the mean of its divisors is an integer number (5035180).

Almost surely, 2^20103019 is an apocalyptic number.

20103019 is a deficient number, since it is larger than the sum of its proper divisors (37701).

20103019 is an equidigital number, since it uses as much as digits as its factorization.

20103019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37700.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 20103019 is about 4483.6390354265. The cubic root of 20103019 is about 271.9070247034.

The spelling of 20103019 in words is "twenty million, one hundred three thousand, nineteen".