213033312 has 36 divisors (see below), whose sum is σ = 605814300. Its totient is φ = 71011008.

The previous prime is 213033311. The next prime is 213033313. The reversal of 213033312 is 213330312.

It is an interprime number because it is at equal distance from previous prime (213033311) and next prime (213033313).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213033311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 369562 + ... + 370137.

It is an arithmetic number, because the mean of its divisors is an integer number (16828175).

Almost surely, 2^213033312 is an apocalyptic number.

It is an amenable number.

213033312 is an abundant number, since it is smaller than the sum of its proper divisors (392780988).

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

213033312 is a wasteful number, since it uses less digits than its factorization.

213033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739715 (or 739704 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213033312 is about 14595.6607250237. The cubic root of 213033312 is about 597.2403937478.

Adding to 213033312 its reverse (213330312), we get a palindrome (426363624).

The spelling of 213033312 in words is "two hundred thirteen million, thirty-three thousand, three hundred twelve".