213040304412 has 96 divisors (see below), whose sum is σ = 555958647552. Its totient is φ = 63070672896.

The previous prime is 213040304401. The next prime is 213040304431. The reversal of 213040304412 is 214403040312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212428 + ... + 686444.

It is an arithmetic number, because the mean of its divisors is an integer number (5791235912).

Almost surely, 2^213040304412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213040304412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277979323776).

213040304412 is an abundant number, since it is smaller than the sum of its proper divisors (342918343140).

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

213040304412 is a wasteful number, since it uses less digits than its factorization.

213040304412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474147 (or 474145 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213040304412 its reverse (214403040312), we get a palindrome (427443344724).

The spelling of 213040304412 in words is "two hundred thirteen billion, forty million, three hundred four thousand, four hundred twelve".