213040203 has 4 divisors (see below), whose sum is σ = 284053608. Its totient is φ = 142026800.

The previous prime is 213040193. The next prime is 213040211. The reversal of 213040203 is 302040312.

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 213040203 - 2⁵ = 213040171 is a prime.

It is a super-3 number, since 3×213040203³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (213040213) 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, 35506698 + ... + 35506703.

It is an arithmetic number, because the mean of its divisors is an integer number (71013402).

Almost surely, 2^213040203 is an apocalyptic number.

213040203 is a deficient number, since it is larger than the sum of its proper divisors (71013405).

213040203 is an equidigital number, since it uses as much as digits as its factorization.

213040203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71013404.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 213040203 is about 14595.8967864260. The cubic root of 213040203 is about 597.2468333340.

Adding to 213040203 its reverse (302040312), we get a palindrome (515080515).

The spelling of 213040203 in words is "two hundred thirteen million, forty thousand, two hundred three".