313440121 has 8 divisors (see below), whose sum is σ = 324957024. Its totient is φ = 302107680.

The previous prime is 313440109. The next prime is 313440139. The reversal of 313440121 is 121044313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-313440121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313440521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42651 + ... + 49456.

It is an arithmetic number, because the mean of its divisors is an integer number (40619628).

Almost surely, 2^313440121 is an apocalyptic number.

It is an amenable number.

313440121 is a deficient number, since it is larger than the sum of its proper divisors (11516903).

313440121 is an equidigital number, since it uses as much as digits as its factorization.

313440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92231.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 313440121 is about 17704.2401983254. The cubic root of 313440121 is about 679.2842244840.

Adding to 313440121 its reverse (121044313), we get a palindrome (434484434).

The spelling of 313440121 in words is "three hundred thirteen million, four hundred forty thousand, one hundred twenty-one".