213244265 has 8 divisors (see below), whose sum is σ = 275577288. Its totient is φ = 157472640.

The previous prime is 213244237. The next prime is 213244313. The reversal of 213244265 is 562442312.

It can be written as a sum of positive squares in 4 ways, for example, as 6948496 + 206295769 = 2636^2 + 14363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213244265 - 2¹⁴ = 213227881 is a prime.

It is a Duffinian 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, 1640276 + ... + 1640405.

It is an arithmetic number, because the mean of its divisors is an integer number (34447161).

Almost surely, 2^213244265 is an apocalyptic number.

It is an amenable number.

213244265 is a deficient number, since it is larger than the sum of its proper divisors (62333023).

213244265 is a wasteful number, since it uses less digits than its factorization.

213244265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280699.

The product of its digits is 11520, while the sum is 29.

The square root of 213244265 is about 14602.8855025300. The cubic root of 213244265 is about 597.4374647880.

Adding to 213244265 its reverse (562442312), we get a palindrome (775686577).

The spelling of 213244265 in words is "two hundred thirteen million, two hundred forty-four thousand, two hundred sixty-five".