212013143 has 4 divisors (see below), whose sum is σ = 213436200. Its totient is φ = 210590088.

The previous prime is 212013133. The next prime is 212013161. The reversal of 212013143 is 341310212.

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 212013143 - 2¹⁶ = 211947607 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 (212013133) 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, 711305 + ... + 711602.

It is an arithmetic number, because the mean of its divisors is an integer number (53359050).

Almost surely, 2^212013143 is an apocalyptic number.

212013143 is a deficient number, since it is larger than the sum of its proper divisors (1423057).

212013143 is a wasteful number, since it uses less digits than its factorization.

212013143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423056.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 212013143 is about 14560.6711040391. The cubic root of 212013143 is about 596.2855175616.

Adding to 212013143 its reverse (341310212), we get a palindrome (553323355).

The spelling of 212013143 in words is "two hundred twelve million, thirteen thousand, one hundred forty-three".