212343303442 has 16 divisors (see below), whose sum is σ = 336808894464. Its totient is φ = 100240740000.

The previous prime is 212343303407. The next prime is 212343303451. The reversal of 212343303442 is 244303343212.

It is a happy number.

212343303442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212343303442² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41764434 + ... + 41769517.

It is an arithmetic number, because the mean of its divisors is an integer number (21050555904).

Almost surely, 2^212343303442 is an apocalyptic number.

212343303442 is a deficient number, since it is larger than the sum of its proper divisors (124465591022).

212343303442 is a wasteful number, since it uses less digits than its factorization.

212343303442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83534025.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 212343303442 its reverse (244303343212), we get a palindrome (456646646654).

The spelling of 212343303442 in words is "two hundred twelve billion, three hundred forty-three million, three hundred three thousand, four hundred forty-two".