213333040 has 20 divisors (see below), whose sum is σ = 495999504. Its totient is φ = 85333184.

The previous prime is 213332993. The next prime is 213333143. The reversal of 213333040 is 40333312.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 213332999 and 213333017.

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 3 ways as a sum of consecutive naturals, for example, 1333252 + ... + 1333411.

Almost surely, 2^213333040 is an apocalyptic number.

213333040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213333040 is an abundant number, since it is smaller than the sum of its proper divisors (282666464).

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

213333040 is a wasteful number, since it uses less digits than its factorization.

213333040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666676 (or 2666670 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 213333040 is about 14605.9248252208. The cubic root of 213333040 is about 597.5203590105.

Adding to 213333040 its reverse (40333312), we get a palindrome (253666352).

The spelling of 213333040 in words is "two hundred thirteen million, three hundred thirty-three thousand, forty".