213404302 has 4 divisors (see below), whose sum is σ = 320106456. Its totient is φ = 106702150.

The previous prime is 213404297. The next prime is 213404309. The reversal of 213404302 is 203404312.

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

It is a super-2 number, since 2×213404302² = 91082792224214408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213404302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213404309) 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 as a sum of consecutive naturals, namely, 53351074 + ... + 53351077.

It is an arithmetic number, because the mean of its divisors is an integer number (80026614).

Almost surely, 2^213404302 is an apocalyptic number.

213404302 is a deficient number, since it is larger than the sum of its proper divisors (106702154).

213404302 is a wasteful number, since it uses less digits than its factorization.

213404302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106702153.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 213404302 is about 14608.3641110153. The cubic root of 213404302 is about 597.5868837200.

Adding to 213404302 its reverse (203404312), we get a palindrome (416808614).

The spelling of 213404302 in words is "two hundred thirteen million, four hundred four thousand, three hundred two".