213355340 has 24 divisors (see below), whose sum is σ = 488778192. Its totient is φ = 77583680.

The previous prime is 213355327. The next prime is 213355381. The reversal of 213355340 is 43553312.

It is a super-2 number, since 2×213355340² = 91041002213031200, which contains 22 as substring.

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, 484679 + ... + 485118.

It is an arithmetic number, because the mean of its divisors is an integer number (20365758).

Almost surely, 2^213355340 is an apocalyptic number.

213355340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213355340 is an abundant number, since it is smaller than the sum of its proper divisors (275422852).

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

213355340 is a wasteful number, since it uses less digits than its factorization.

213355340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969817 (or 969815 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 213355340 is about 14606.6881941116. The cubic root of 213355340 is about 597.5411781638.

It can be divided in two parts, 213 and 355340, that added together give a palindrome (355553).

The spelling of 213355340 in words is "two hundred thirteen million, three hundred fifty-five thousand, three hundred forty".