213403819 has 4 divisors (see below), whose sum is σ = 214476400. Its totient is φ = 212331240.

The previous prime is 213403759. The next prime is 213403891. The reversal of 213403819 is 918304312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213403819 - 2⁷ = 213403691 is a prime.

It is a super-2 number, since 2×213403819² = 91082379927569522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213403019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535992 + ... + 536389.

It is an arithmetic number, because the mean of its divisors is an integer number (53619100).

Almost surely, 2^213403819 is an apocalyptic number.

213403819 is a deficient number, since it is larger than the sum of its proper divisors (1072581).

213403819 is a wasteful number, since it uses less digits than its factorization.

213403819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072580.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 213403819 is about 14608.3475793808. The cubic root of 213403819 is about 597.5864328783.

The spelling of 213403819 in words is "two hundred thirteen million, four hundred three thousand, eight hundred nineteen".