213730302 has 8 divisors (see below), whose sum is σ = 427460616. Its totient is φ = 71243432.

The previous prime is 213730301. The next prime is 213730357. The reversal of 213730302 is 203037312.

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

213730302 is an admirable number.

It is a super-2 number, since 2×213730302² = 91361283986022408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213730301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17810853 + ... + 17810864.

It is an arithmetic number, because the mean of its divisors is an integer number (53432577).

Almost surely, 2^213730302 is an apocalyptic number.

213730302 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213730302 is a wasteful number, since it uses less digits than its factorization.

213730302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35621722.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 213730302 is about 14619.5178443066. The cubic root of 213730302 is about 597.8910234934.

Adding to 213730302 its reverse (203037312), we get a palindrome (416767614).

The spelling of 213730302 in words is "two hundred thirteen million, seven hundred thirty thousand, three hundred two".