240323210666213 has 4 divisors (see below), whose sum is σ = 240324442069548. Its totient is φ = 240321979262880.

The previous prime is 240323210666173. The next prime is 240323210666219. The reversal of 240323210666213 is 312666012323042.

240323210666213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57633574855684 + 182689635810529 = 7591678^2 + 13516273^2 .

It is a cyclic number.

It is not a de Polignac number, because 240323210666213 - 2²⁴ = 240323193888997 is a prime.

It is a super-2 number, since 2×240323210666213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240323210666219) 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, 615408878 + ... + 615799263.

It is an arithmetic number, because the mean of its divisors is an integer number (60081110517387).

Almost surely, 2^{240323210666213} is an apocalyptic number.

It is an amenable number.

240323210666213 is a deficient number, since it is larger than the sum of its proper divisors (1231403335).

240323210666213 is a wasteful number, since it uses less digits than its factorization.

240323210666213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231403334.

The product of its (nonzero) digits is 373248, while the sum is 41.

Adding to 240323210666213 its reverse (312666012323042), we get a palindrome (552989222989255).

The spelling of 240323210666213 in words is "two hundred forty trillion, three hundred twenty-three billion, two hundred ten million, six hundred sixty-six thousand, two hundred thirteen".