213420343234 has 32 divisors (see below), whose sum is σ = 381807933696. Its totient is φ = 87480518400.

The previous prime is 213420343223. The next prime is 213420343243. The reversal of 213420343234 is 432343024312.

It is a happy number.

It is a super-2 number, since 2×213420343234² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213420343196 and 213420343205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4062334 + ... + 4114534.

It is an arithmetic number, because the mean of its divisors is an integer number (11931497928).

Almost surely, 2^213420343234 is an apocalyptic number.

213420343234 is a deficient number, since it is larger than the sum of its proper divisors (168387590462).

213420343234 is a wasteful number, since it uses less digits than its factorization.

213420343234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64930.

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

Adding to 213420343234 its reverse (432343024312), we get a palindrome (645763367546).

The spelling of 213420343234 in words is "two hundred thirteen billion, four hundred twenty million, three hundred forty-three thousand, two hundred thirty-four".