213969835 has 8 divisors (see below), whose sum is σ = 257107536. Its totient is φ = 170946720.

The previous prime is 213969829. The next prime is 213969881. The reversal of 213969835 is 538969312.

It is a happy number.

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

It is not a de Polignac number, because 213969835 - 2³ = 213969827 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, 24481 + ... + 32050.

It is an arithmetic number, because the mean of its divisors is an integer number (32138442).

Almost surely, 2^213969835 is an apocalyptic number.

213969835 is a deficient number, since it is larger than the sum of its proper divisors (43137701).

213969835 is an equidigital number, since it uses as much as digits as its factorization.

213969835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57293.

The product of its digits is 349920, while the sum is 46.

The square root of 213969835 is about 14627.7077835182. The cubic root of 213969835 is about 598.1142973437.

The spelling of 213969835 in words is "two hundred thirteen million, nine hundred sixty-nine thousand, eight hundred thirty-five".