20731203 has 12 divisors (see below), whose sum is σ = 30642040. Its totient is φ = 13499136.

The previous prime is 20731189. The next prime is 20731231. The reversal of 20731203 is 30213702.

It is not a de Polignac number, because 20731203 - 2⁴ = 20731187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20731253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26398 + ... + 27171.

Almost surely, 2^20731203 is an apocalyptic number.

20731203 is a deficient number, since it is larger than the sum of its proper divisors (9910837).

20731203 is a wasteful number, since it uses less digits than its factorization.

20731203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53618 (or 53615 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 20731203 is about 4553.1530833039. The cubic root of 20731203 is about 274.7102314161.

Adding to 20731203 its reverse (30213702), we get a palindrome (50944905).

The spelling of 20731203 in words is "twenty million, seven hundred thirty-one thousand, two hundred three".