213434334 has 96 divisors (see below), whose sum is σ = 504241920. Its totient is φ = 65038464.

The previous prime is 213434323. The next prime is 213434341. The reversal of 213434334 is 433434312.

It is a junction number, because it is equal to n+sod(n) for n = 213434298 and 213434307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2072127 + ... + 2072229.

It is an arithmetic number, because the mean of its divisors is an integer number (5252520).

Almost surely, 2^213434334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213434334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252120960).

213434334 is an abundant number, since it is smaller than the sum of its proper divisors (290807586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213434334 is a wasteful number, since it uses less digits than its factorization.

213434334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 283 counting only the distinct ones).

The product of its digits is 10368, while the sum is 27.

The square root of 213434334 is about 14609.3919791345. The cubic root of 213434334 is about 597.6149148442.

Adding to 213434334 its reverse (433434312), we get a palindrome (646868646).

It can be divided in two parts, 2 and 13434334, that added together give a triangular number (13434336 = T₅₁₈₃).

The spelling of 213434334 in words is "two hundred thirteen million, four hundred thirty-four thousand, three hundred thirty-four".