213443330 has 16 divisors (see below), whose sum is σ = 406798200. Its totient is φ = 80355072.

The previous prime is 213443323. The next prime is 213443341. The reversal of 213443330 is 33344312.

It can be written as a sum of positive squares in 4 ways, for example, as 213422881 + 20449 = 14609^2 + 143^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213443296 and 213443305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627605 + ... + 627944.

Almost surely, 2^213443330 is an apocalyptic number.

213443330 is a deficient number, since it is larger than the sum of its proper divisors (193354870).

213443330 is a wasteful number, since it uses less digits than its factorization.

213443330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255573.

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

The square root of 213443330 is about 14609.6998600245. The cubic root of 213443330 is about 597.6233109757.

Adding to 213443330 its reverse (33344312), we get a palindrome (246787642).

The spelling of 213443330 in words is "two hundred thirteen million, four hundred forty-three thousand, three hundred thirty".