240712213 has 4 divisors (see below), whose sum is σ = 275099680. Its totient is φ = 206324748.

The previous prime is 240712183. The next prime is 240712217. The reversal of 240712213 is 312217042.

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 not a de Polignac number, because 240712213 - 2⁹ = 240711701 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 (240712217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17193723 + ... + 17193736.

It is an arithmetic number, because the mean of its divisors is an integer number (68774920).

Almost surely, 2^240712213 is an apocalyptic number.

It is an amenable number.

240712213 is a deficient number, since it is larger than the sum of its proper divisors (34387467).

240712213 is an equidigital number, since it uses as much as digits as its factorization.

240712213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34387466.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 240712213 is about 15514.9029323422. The cubic root of 240712213 is about 622.0606194990.

Adding to 240712213 its reverse (312217042), we get a palindrome (552929255).

The spelling of 240712213 in words is "two hundred forty million, seven hundred twelve thousand, two hundred thirteen".