212040343 has 8 divisors (see below), whose sum is σ = 215042048. Its totient is φ = 209059704.

The previous prime is 212040329. The next prime is 212040347. The reversal of 212040343 is 343040212.

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

It is a cyclic number.

It is not a de Polignac number, because 212040343 - 2⁹ = 212039831 is a prime.

It is a super-2 number, since 2×212040343² = 89922214119115298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212040343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212040347) 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, 15580 + ... + 25822.

It is an arithmetic number, because the mean of its divisors is an integer number (26880256).

Almost surely, 2^212040343 is an apocalyptic number.

212040343 is a deficient number, since it is larger than the sum of its proper divisors (3001705).

212040343 is a wasteful number, since it uses less digits than its factorization.

212040343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10533.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 212040343 is about 14561.6050969665. The cubic root of 212040343 is about 596.3110164093.

Adding to 212040343 its reverse (343040212), we get a palindrome (555080555).

The spelling of 212040343 in words is "two hundred twelve million, forty thousand, three hundred forty-three".