313042240321 has 4 divisors (see below), whose sum is σ = 313043494192. Its totient is φ = 313040986452.

The previous prime is 313042240241. The next prime is 313042240333. The reversal of 313042240321 is 123042240313.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 313042240321 - 2¹⁷ = 313042109249 is a prime.

It is a super-3 number, since 3×313042240321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313042247321) 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, 110811 + ... + 798976.

It is an arithmetic number, because the mean of its divisors is an integer number (78260873548).

Almost surely, 2^313042240321 is an apocalyptic number.

It is an amenable number.

313042240321 is a deficient number, since it is larger than the sum of its proper divisors (1253871).

313042240321 is an equidigital number, since it uses as much as digits as its factorization.

313042240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253870.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 313042240321 its reverse (123042240313), we get a palindrome (436084480634).

The spelling of 313042240321 in words is "three hundred thirteen billion, forty-two million, two hundred forty thousand, three hundred twenty-one".