213430304 has 12 divisors (see below), whose sum is σ = 420190974. Its totient is φ = 106715136.

The previous prime is 213430279. The next prime is 213430333. The reversal of 213430304 is 403034312.

It can be written as a sum of positive squares in only one way, i.e., 189888400 + 23541904 = 13780^2 + 4852^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334817 + ... + 3334880.

Almost surely, 2^213430304 is an apocalyptic number.

It is an amenable number.

213430304 is a deficient number, since it is larger than the sum of its proper divisors (206760670).

213430304 is an equidigital number, since it uses as much as digits as its factorization.

213430304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669707 (or 6669699 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 213430304 is about 14609.2540535101. The cubic root of 213430304 is about 597.6111534948.

Adding to 213430304 its reverse (403034312), we get a palindrome (616464616).

The spelling of 213430304 in words is "two hundred thirteen million, four hundred thirty thousand, three hundred four".