213430235 has 4 divisors (see below), whose sum is σ = 256116288. Its totient is φ = 170744184.

The previous prime is 213430229. The next prime is 213430241. The reversal of 213430235 is 532034312.

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

It is an interprime number because it is at equal distance from previous prime (213430229) and next prime (213430241).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213430235 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213430235.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21343019 + ... + 21343028.

It is an arithmetic number, because the mean of its divisors is an integer number (64029072).

Almost surely, 2^213430235 is an apocalyptic number.

213430235 is a deficient number, since it is larger than the sum of its proper divisors (42686053).

213430235 is an equidigital number, since it uses as much as digits as its factorization.

213430235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42686052.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 213430235 is about 14609.2516919930. The cubic root of 213430235 is about 597.6110890942.

Adding to 213430235 its reverse (532034312), we get a palindrome (745464547).

The spelling of 213430235 in words is "two hundred thirteen million, four hundred thirty thousand, two hundred thirty-five".