213430343 has 16 divisors (see below), whose sum is σ = 252866880. Its totient is φ = 176257536.

The previous prime is 213430339. The next prime is 213430367. The reversal of 213430343 is 343034312.

It is not a de Polignac number, because 213430343 - 2² = 213430339 is a prime.

It is a super-2 number, since 2×213430343² = 91105022626195298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213430333) 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 15 ways as a sum of consecutive naturals, for example, 136655 + ... + 138207.

It is an arithmetic number, because the mean of its divisors is an integer number (15804180).

Almost surely, 2^213430343 is an apocalyptic number.

213430343 is a deficient number, since it is larger than the sum of its proper divisors (39436537).

213430343 is a wasteful number, since it uses less digits than its factorization.

213430343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 213430343 is about 14609.2553882804. The cubic root of 213430343 is about 597.6111898952.

Adding to 213430343 its reverse (343034312), we get a palindrome (556464655).

The spelling of 213430343 in words is "two hundred thirteen million, four hundred thirty thousand, three hundred forty-three".