213103744 has 96 divisors (see below), whose sum is σ = 502852860. Its totient is φ = 89671680.

The previous prime is 213103729. The next prime is 213103771. The reversal of 213103744 is 447301312.

It can be written as a sum of positive squares in 2 ways, for example, as 155950144 + 57153600 = 12488^2 + 7560^2 .

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, 382314 + ... + 382870.

Almost surely, 2^213103744 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 213103744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251426430).

213103744 is an abundant number, since it is smaller than the sum of its proper divisors (289749116).

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

213103744 is an equidigital number, since it uses as much as digits as its factorization.

213103744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 213103744 is about 14598.0732975280. The cubic root of 213103744 is about 597.3062053652.

The spelling of 213103744 in words is "two hundred thirteen million, one hundred three thousand, seven hundred forty-four".