213035240 has 32 divisors (see below), whose sum is σ = 522905760. Its totient is φ = 77467200.

The previous prime is 213035237. The next prime is 213035257. The reversal of 213035240 is 42530312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 241646 + ... + 242525.

It is an arithmetic number, because the mean of its divisors is an integer number (16340805).

Almost surely, 2^213035240 is an apocalyptic number.

213035240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213035240 is an abundant number, since it is smaller than the sum of its proper divisors (309870520).

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

213035240 is a wasteful number, since it uses less digits than its factorization.

213035240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484193 (or 484189 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 213035240 is about 14595.7267719014. The cubic root of 213035240 is about 597.2421954629.

Adding to 213035240 its reverse (42530312), we get a palindrome (255565552).

The spelling of 213035240 in words is "two hundred thirteen million, thirty-five thousand, two hundred forty".