20103471 has 20 divisors (see below), whose sum is σ = 30171592. Its totient is φ = 13339728.

The previous prime is 20103443. The next prime is 20103487. The reversal of 20103471 is 17430102.

It is not a de Polignac number, because 20103471 - 2¹³ = 20095279 is a prime.

It is a super-3 number, since 3×20103471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103071) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22485 + ... + 23361.

Almost surely, 2^20103471 is an apocalyptic number.

20103471 is a deficient number, since it is larger than the sum of its proper divisors (10068121).

20103471 is an equidigital number, since it uses as much as digits as its factorization.

20103471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20103471 is about 4483.6894406281. The cubic root of 20103471 is about 271.9090625574.

Adding to 20103471 its reverse (17430102), we get a palindrome (37533573).

The spelling of 20103471 in words is "twenty million, one hundred three thousand, four hundred seventy-one".