213251100 has 36 divisors (see below), whose sum is σ = 617007384. Its totient is φ = 56866880.

The previous prime is 213251089. The next prime is 213251167. The reversal of 213251100 is 1152312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 213251100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355119 + ... + 355718.

It is an arithmetic number, because the mean of its divisors is an integer number (17139094).

Almost surely, 2^213251100 is an apocalyptic number.

213251100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213251100 is an abundant number, since it is smaller than the sum of its proper divisors (403756284).

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

213251100 is a wasteful number, since it uses less digits than its factorization.

213251100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710854 (or 710847 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 213251100 is about 14603.1195297443. The cubic root of 213251100 is about 597.4438478302.

The spelling of 213251100 in words is "two hundred thirteen million, two hundred fifty-one thousand, one hundred".