213197344 has 12 divisors (see below), whose sum is σ = 419732334. Its totient is φ = 106598656.

The previous prime is 213197297. The next prime is 213197359. The reversal of 213197344 is 443791312.

It can be written as a sum of positive squares in only one way, i.e., 212576400 + 620944 = 14580^2 + 788^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331177 + ... + 3331240.

Almost surely, 2^213197344 is an apocalyptic number.

It is an amenable number.

213197344 is a deficient number, since it is larger than the sum of its proper divisors (206534990).

213197344 is an equidigital number, since it uses as much as digits as its factorization.

213197344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662427 (or 6662419 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 213197344 is about 14601.2788481009. The cubic root of 213197344 is about 597.3936427114.

The spelling of 213197344 in words is "two hundred thirteen million, one hundred ninety-seven thousand, three hundred forty-four".