20103007 has 12 divisors (see below), whose sum is σ = 21396960. Its totient is φ = 18883872.

The previous prime is 20102983. The next prime is 20103047. The reversal of 20103007 is 70030102.

It is a de Polignac number, because none of the positive numbers 2^k-20103007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103047) 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 11 ways as a sum of consecutive naturals, for example, 83994 + ... + 84232.

It is an arithmetic number, because the mean of its divisors is an integer number (1783080).

Almost surely, 2^20103007 is an apocalyptic number.

20103007 is a deficient number, since it is larger than the sum of its proper divisors (1293953).

20103007 is a wasteful number, since it uses less digits than its factorization.

20103007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 20103007 is about 4483.6376972276. The cubic root of 20103007 is about 271.9069706007.

Adding to 20103007 its reverse (70030102), we get a palindrome (90133109).

The spelling of 20103007 in words is "twenty million, one hundred three thousand, seven".