240013213 has 4 divisors (see below), whose sum is σ = 261832608. Its totient is φ = 218193820.

The previous prime is 240013183. The next prime is 240013217. The reversal of 240013213 is 312310042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240013213 - 2²¹ = 237916061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240013217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10909681 + ... + 10909702.

It is an arithmetic number, because the mean of its divisors is an integer number (65458152).

Almost surely, 2^240013213 is an apocalyptic number.

It is an amenable number.

240013213 is a deficient number, since it is larger than the sum of its proper divisors (21819395).

240013213 is a wasteful number, since it uses less digits than its factorization.

240013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21819394.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 240013213 is about 15492.3598267017. The cubic root of 240013213 is about 621.4579053879.

Adding to 240013213 its reverse (312310042), we get a palindrome (552323255).

The spelling of 240013213 in words is "two hundred forty million, thirteen thousand, two hundred thirteen".