213255140 has 48 divisors (see below), whose sum is σ = 541924992. Its totient is φ = 68814336.

The previous prime is 213255127. The next prime is 213255151. The reversal of 213255140 is 41552312.

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 15 ways as a sum of consecutive naturals, for example, 42422 + ... + 47181.

It is an arithmetic number, because the mean of its divisors is an integer number (11290104).

Almost surely, 2^213255140 is an apocalyptic number.

213255140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213255140 is an abundant number, since it is smaller than the sum of its proper divisors (328669852).

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

213255140 is a wasteful number, since it uses less digits than its factorization.

213255140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89636 (or 89634 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 213255140 is about 14603.2578556978. The cubic root of 213255140 is about 597.4476206250.

The spelling of 213255140 in words is "two hundred thirteen million, two hundred fifty-five thousand, one hundred forty".