213013344 has 48 divisors (see below), whose sum is σ = 561142512. Its totient is φ = 70752768.

The previous prime is 213013337. The next prime is 213013363. The reversal of 213013344 is 443310312.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 213013344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24342 + ... + 31914.

It is an arithmetic number, because the mean of its divisors is an integer number (11690469).

Almost surely, 2^213013344 is an apocalyptic number.

213013344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213013344 is an abundant number, since it is smaller than the sum of its proper divisors (348129168).

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

213013344 is a wasteful number, since it uses less digits than its factorization.

213013344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7879 (or 7871 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 213013344 is about 14594.9766700739. The cubic root of 213013344 is about 597.2217330217.

Adding to 213013344 its reverse (443310312), we get a palindrome (656323656).

The spelling of 213013344 in words is "two hundred thirteen million, thirteen thousand, three hundred forty-four".