213713839 has 4 divisors (see below), whose sum is σ = 213791400. Its totient is φ = 213636280.

The previous prime is 213713837. The next prime is 213713869. The reversal of 213713839 is 938317312.

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 213713839 - 2¹ = 213713837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213713798 and 213713807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213713833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34489 + ... + 40210.

It is an arithmetic number, because the mean of its divisors is an integer number (53447850).

Almost surely, 2^213713839 is an apocalyptic number.

213713839 is a deficient number, since it is larger than the sum of its proper divisors (77561).

213713839 is an equidigital number, since it uses as much as digits as its factorization.

213713839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77560.

The product of its digits is 27216, while the sum is 37.

The square root of 213713839 is about 14618.9547847991. The cubic root of 213713839 is about 597.8756718523.

The spelling of 213713839 in words is "two hundred thirteen million, seven hundred thirteen thousand, eight hundred thirty-nine".