212235440343 has 8 divisors (see below), whose sum is σ = 295284091008. Its totient is φ = 135338541624.

The previous prime is 212235440323. The next prime is 212235440353. The reversal of 212235440343 is 343044532212.

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

It is not a de Polignac number, because 212235440343 - 2⁹ = 212235439831 is a prime.

It is a super-2 number, since 2×212235440343² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212235440303) 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, 1537937905 + ... + 1537938042.

It is an arithmetic number, because the mean of its divisors is an integer number (36910511376).

Almost surely, 2^212235440343 is an apocalyptic number.

212235440343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212235440343 is a deficient number, since it is larger than the sum of its proper divisors (83048650665).

212235440343 is a wasteful number, since it uses less digits than its factorization.

212235440343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075875973.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 212235440343 its reverse (343044532212), we get a palindrome (555279972555).

The spelling of 212235440343 in words is "two hundred twelve billion, two hundred thirty-five million, four hundred forty thousand, three hundred forty-three".