213334540 has 48 divisors (see below), whose sum is σ = 458625888. Its totient is φ = 83326464.

The previous prime is 213334483. The next prime is 213334549. The reversal of 213334540 is 45433312.

213334540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213334549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331459 + ... + 332101.

It is an arithmetic number, because the mean of its divisors is an integer number (9554706).

Almost surely, 2^213334540 is an apocalyptic number.

213334540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213334540 is an abundant number, since it is smaller than the sum of its proper divisors (245291348).

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

213334540 is a wasteful number, since it uses less digits than its factorization.

213334540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 213334540 is about 14605.9761741556. The cubic root of 213334540 is about 597.5217594475.

Adding to 213334540 its reverse (45433312), we get a palindrome (258767852).

The spelling of 213334540 in words is "two hundred thirteen million, three hundred thirty-four thousand, five hundred forty".