213243264530 has 16 divisors (see below), whose sum is σ = 389095930584. Its totient is φ = 84128849280.

The previous prime is 213243264511. The next prime is 213243264539. The reversal of 213243264530 is 35462342312.

It is a happy number.

213243264530 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 153146212921 + 60097051609 = 391339^2 + 245147^2 .

It is a super-2 number, since 2×213243264530² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213243264539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146056301 + ... + 146057760.

Almost surely, 2^213243264530 is an apocalyptic number.

213243264530 is a deficient number, since it is larger than the sum of its proper divisors (175852666054).

213243264530 is a wasteful number, since it uses less digits than its factorization.

213243264530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292114141.

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 213243264530 in words is "two hundred thirteen billion, two hundred forty-three million, two hundred sixty-four thousand, five hundred thirty".