240313321261 has 4 divisors (see below), whose sum is σ = 258798961372. Its totient is φ = 221827681152.

The previous prime is 240313321247. The next prime is 240313321271. The reversal of 240313321261 is 162123313042.

It is a happy number.

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 92957912100 + 147355409161 = 304890^2 + 383869^2 .

It is a cyclic number.

It is not a de Polignac number, because 240313321261 - 2¹³ = 240313313069 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 (240313321211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9242820036 + ... + 9242820061.

It is an arithmetic number, because the mean of its divisors is an integer number (64699740343).

Almost surely, 2^240313321261 is an apocalyptic number.

It is an amenable number.

240313321261 is a deficient number, since it is larger than the sum of its proper divisors (18485640111).

240313321261 is a wasteful number, since it uses less digits than its factorization.

240313321261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18485640110.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 240313321261 in words is "two hundred forty billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred sixty-one".