240361731289 has 3 divisors (see below), whose sum is σ = 240362221557. Its totient is φ = 240361241022.

The previous prime is 240361731257. The next prime is 240361731293. The reversal of 240361731289 is 982137163042.

The square root of 240361731289 is 490267.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 240361731289 - 2⁵ = 240361731257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240361791289) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 245134 + ... + 735400.

It is an arithmetic number, because the mean of its divisors is an integer number (80120740519).

Almost surely, 2^240361731289 is an apocalyptic number.

240361731289 is the 490267-th square number.

240361731289 is the 245134-th centered octagonal number.

It is an amenable number.

240361731289 is a deficient number, since it is larger than the sum of its proper divisors (490268).

240361731289 is an frugal number, since it uses more digits than its factorization.

240361731289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980534 (or 490267 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 240361731289 in words is "two hundred forty billion, three hundred sixty-one million, seven hundred thirty-one thousand, two hundred eighty-nine".