213430786 has 8 divisors (see below), whose sum is σ = 321114384. Its totient is φ = 106392660.

The previous prime is 213430771. The next prime is 213430817. The reversal of 213430786 is 687034312.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160540 + ... + 161863.

It is an arithmetic number, because the mean of its divisors is an integer number (40139298).

Almost surely, 2^213430786 is an apocalyptic number.

213430786 is a deficient number, since it is larger than the sum of its proper divisors (107683598).

213430786 is a wasteful number, since it uses less digits than its factorization.

213430786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322736.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 213430786 is about 14609.2705498940. The cubic root of 213430786 is about 597.6116033659.

The spelling of 213430786 in words is "two hundred thirteen million, four hundred thirty thousand, seven hundred eighty-six".