440313142243 has 4 divisors (see below), whose sum is σ = 474183383968. Its totient is φ = 406442900520.

The previous prime is 440313142237. The next prime is 440313142259. The reversal of 440313142243 is 342241313044.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440313142243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440313142273) 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, 16935120843 + ... + 16935120868.

It is an arithmetic number, because the mean of its divisors is an integer number (118545845992).

Almost surely, 2^440313142243 is an apocalyptic number.

440313142243 is a deficient number, since it is larger than the sum of its proper divisors (33870241725).

440313142243 is a wasteful number, since it uses less digits than its factorization.

440313142243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33870241724.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 440313142243 its reverse (342241313044), we get a palindrome (782554455287).

The spelling of 440313142243 in words is "four hundred forty billion, three hundred thirteen million, one hundred forty-two thousand, two hundred forty-three".