213264819 has 24 divisors (see below), whose sum is σ = 324251200. Its totient is φ = 140043816.

The previous prime is 213264817. The next prime is 213264823. The reversal of 213264819 is 918462312.

213264819 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 648 + 1 + 9 = 666.

It is not a de Polignac number, because 213264819 - 2¹ = 213264817 is a prime.

It is a super-2 number, since 2×213264819² = 90963766046205522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213264817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9732 + ... + 22830.

Almost surely, 2^213264819 is an apocalyptic number.

213264819 is a deficient number, since it is larger than the sum of its proper divisors (110986381).

213264819 is an equidigital number, since it uses as much as digits as its factorization.

213264819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13181 (or 13169 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 213264819 is about 14603.5892505918. The cubic root of 213264819 is about 597.4566592630.

The spelling of 213264819 in words is "two hundred thirteen million, two hundred sixty-four thousand, eight hundred nineteen".