213203140 has 24 divisors (see below), whose sum is σ = 448018200. Its totient is φ = 85225728.

The previous prime is 213203119. The next prime is 213203147. The reversal of 213203140 is 41302312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54997056 + 158206084 = 7416^2 + 12578^2 .

It is not an unprimeable number, because it can be changed into a prime (213203147) by changing a digit.

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, 43536 + ... + 48184.

It is an arithmetic number, because the mean of its divisors is an integer number (18667425).

Almost surely, 2^213203140 is an apocalyptic number.

213203140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213203140 is an abundant number, since it is smaller than the sum of its proper divisors (234815060).

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

213203140 is a wasteful number, since it uses less digits than its factorization.

213203140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951 (or 6949 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213203140 is about 14601.4773225177. The cubic root of 213203140 is about 597.3990562594.

Adding to 213203140 its reverse (41302312), we get a palindrome (254505452).

The spelling of 213203140 in words is "two hundred thirteen million, two hundred three thousand, one hundred forty".