213311465 has 8 divisors (see below), whose sum is σ = 264231168. Its totient is φ = 165144240.

The previous prime is 213311447. The next prime is 213311473. The reversal of 213311465 is 564113312.

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

It is not a de Polignac number, because 213311465 - 2⁸ = 213311209 is a prime.

It is a super-2 number, since 2×213311465² = 91003562200892450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687947 + ... + 688256.

It is an arithmetic number, because the mean of its divisors is an integer number (33028896).

Almost surely, 2^213311465 is an apocalyptic number.

It is an amenable number.

213311465 is a deficient number, since it is larger than the sum of its proper divisors (50919703).

213311465 is a wasteful number, since it uses less digits than its factorization.

213311465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376239.

The product of its digits is 2160, while the sum is 26.

The square root of 213311465 is about 14605.1862364025. The cubic root of 213311465 is about 597.5002153323.

Adding to 213311465 its reverse (564113312), we get a palindrome (777424777).

The spelling of 213311465 in words is "two hundred thirteen million, three hundred eleven thousand, four hundred sixty-five".