213104034 has 80 divisors (see below), whose sum is σ = 561052800. Its totient is φ = 59603040.

The previous prime is 213104033. The next prime is 213104083. The reversal of 213104034 is 430401312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213103998 and 213104016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213104033) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18567 + ... + 27765.

It is an arithmetic number, because the mean of its divisors is an integer number (7013160).

Almost surely, 2^213104034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213104034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280526400).

213104034 is an abundant number, since it is smaller than the sum of its proper divisors (347948766).

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

213104034 is a wasteful number, since it uses less digits than its factorization.

213104034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9237 (or 9228 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 213104034 is about 14598.0832303423. The cubic root of 213104034 is about 597.3064763111.

Adding to 213104034 its reverse (430401312), we get a palindrome (643505346).

The spelling of 213104034 in words is "two hundred thirteen million, one hundred four thousand, thirty-four".