213211704 has 16 divisors (see below), whose sum is σ = 533029320. Its totient is φ = 71070560.

The previous prime is 213211703. The next prime is 213211709. The reversal of 213211704 is 407112312.

213211704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213211703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4441887 + ... + 4441934.

Almost surely, 2^213211704 is an apocalyptic number.

213211704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213211704 is an abundant number, since it is smaller than the sum of its proper divisors (319817616).

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

213211704 is a wasteful number, since it uses less digits than its factorization.

213211704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883830 (or 8883826 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 213211704 is about 14601.7705775704. The cubic root of 213211704 is about 597.4070549799.

The spelling of 213211704 in words is "two hundred thirteen million, two hundred eleven thousand, seven hundred four".