213203111 has 8 divisors (see below), whose sum is σ = 233158800. Its totient is φ = 193343040.

The previous prime is 213203063. The next prime is 213203117. The reversal of 213203111 is 111302312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213203111 - 2¹⁸ = 212940967 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 (213203117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19196 + ... + 28193.

It is an arithmetic number, because the mean of its divisors is an integer number (29144850).

Almost surely, 2^213203111 is an apocalyptic number.

213203111 is a deficient number, since it is larger than the sum of its proper divisors (19955689).

213203111 is a wasteful number, since it uses less digits than its factorization.

213203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47809.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 213203111 is about 14601.4763294675. The cubic root of 213203111 is about 597.3990291732.

Adding to 213203111 its reverse (111302312), we get a palindrome (324505423).

The spelling of 213203111 in words is "two hundred thirteen million, two hundred three thousand, one hundred eleven".