213340040 has 16 divisors (see below), whose sum is σ = 480015180. Its totient is φ = 85336000.

The previous prime is 213340027. The next prime is 213340051. The reversal of 213340040 is 40043312.

It can be written as a sum of positive squares in 2 ways, for example, as 205578244 + 7761796 = 14338^2 + 2786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2666711 + ... + 2666790.

Almost surely, 2^213340040 is an apocalyptic number.

213340040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213340040 is an abundant number, since it is smaller than the sum of its proper divisors (266675140).

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

213340040 is a wasteful number, since it uses less digits than its factorization.

213340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333512 (or 5333508 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 213340040 is about 14606.1644520387. The cubic root of 213340040 is about 597.5268943270.

Adding to 213340040 its reverse (40043312), we get a palindrome (253383352).

The spelling of 213340040 in words is "two hundred thirteen million, three hundred forty thousand, forty".